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                                                                   EXHIBIT 10.10


                               AMENDED & RESTATED
                                      LEASE



           This Lease ("Lease") is made between NORTHERN AUTOMOTIVE
CORPORATION, an Arizona Corporation, whose address is 645 East Missouri Avenue,
Phoenix, AZ 85012 ("Tenant"), and Missouri Falls Associates Limited
Partnership, an Arizona Limited Partnership, whose address is 645 East Missouri
Avenue, Phoenix, AZ 85012, ("Landlord"), on this 23rd day of October, 1989.

           WHEREAS, on March 14, 1987, the parties entered into a lease
agreement for certain office space located at 645 East Missouri Avenue in
Phoenix, Arizona, which lease was amended by that certain lease Amendment I
executed October 29, 1987 and that certain Amendment II executed October 28,
1987 ("Original Lease").

           WHEREAS, the parties desire to make certain modifications to the
Original Lease as amended, and as so modified, to restate the Original Lease in
its entirety;

           NOW, THEREFORE, the Original Lease is hereby amended and restated in
its entirety, effective August 01, 1989, as follows:

1.         TERMS AND CONDITIONS:

           A.         "LEASED PREMISES" shall mean on EXHIBIT A attached
                      hereto and made a part thereof. The Leased Premises shall
                      contain no less than 89,718 square feet, and shall include
                      the third and fourth floors.

           B.         "BUILDING"  shall mean the office building  located at 645
                      E. Missouri Ave., Phoenix, Arizona and the real property
                      on which it is located, as described in EXHIBIT B hereto
                      and made a part hereof.

           C.         "LEASE COMMENCEMENT DATE" shall mean: 08/01/89.

           D.         "LEASE TERM" shall mean the period beginning on the Lease
                      Commencement Date and ending eight years thereafter. Any
                      reference in this Lease to Lease term or the words
                      "DURING THE TERM" or "THE TERM" shall all be deemed to
                      include any extension thereof authorized under this
                      lease.


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           E.         "BASE RENT" shall mean the following for the period
                      indicated:





                                                  ANNUAL BASE RENT
                              MONTHLY          PER SQ. FT. OF TENANT'S
              PERIOD         BASE RENT          TOTAL SQUARE FOOTAGE

                                                              
08/01/89 to 12/31/89            $ 76,931.20                         $13.08
- -----------------------    ----------------   ----------------------------
01/01/90 to 12/31/90              90,424.00                          15.36
- -----------------------    ----------------   ----------------------------
01/01/91 to 07/31/92             114,085.85                          15.24
- -----------------------    ----------------   ----------------------------
08/01/92 to 07/31/95             131,411.08                          17.52
- -----------------------    --------------     ----------------------------
08/01/95 to 07/31/99             141,679.68                          18.96
- -----------------------    ----------------   ----------------------------

- -----------------------    ----------------   ----------------------------

- -----------------------    ----------------   ----------------------------

- -----------------------    ----------------   ----------------------------

- -----------------------    ----------------   ----------------------------


                      Tenant currently occupies 70,669 square feet of the
                      leased premises. Tenant may occupy all or part of the
                      additional 19,049 square feet (The "Additional Expansion
                      Space") prior to 01/01/91. If Tenant occupies any or all
                      of the Additional Expansion Space prior to 01/01/91,
                      Tenant shall be obligated to begin paying both Base Rent
                      and its Pro Rata Share of Building Operating Costs upon
                      occupancy at the rates provided herein for the space
                      currently occupied.

           F.         "TENANT'S TOTAL SQUARE  FOOTAGE" shall mean  approximately
                      89,718 rentable square feet which is calculated by adding
                      together the hatched area shown on EXHIBIT A and Tenant's
                      share of the "COMMON AREAS OF THE BUILDING"; "TOTAL
                      BUILDING SQUARE FOOTAGE" shall mean 187,941 rentable
                      square feet, which is calculated by adding together
                      rentable square footage of the premises leasable in the
                      Building and the Common Areas of the Building; and the
                      "TENANT'S PRO RATA SHARE" shall mean 47.74% (Tenant's
                      Total Square Footage divided by Total Building Square
                      Footage). All measurements of rentable areas in the
                      Building shall be computed by measuring from the inside
                      of "PERMANENT OUTER BUILDING WALLS," hereinafter deemed
                      to exclude from such measurement the thickness of any
                      special surfacing materials such as paneling, furring
                      strips, and carpet, or from the inside surface of the
                      glass line where present to the inside of Permanent Outer
                      Building Walls or the inside surface of the glass line
                      where present. If such measurements are later discovered
                      to be in conflict with the square footages stated above,
                      this Lease shall be amended to provide for the actual

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                      square footages, and any covenants herein based upon
                      ratios relating to such square footages shall likewise be
                      modified; provided such amendment shall be retroactive.

           G.         "PERMITTED PURPOSE" shall mean use of the Leased Premises
                      for general office purposes and purposes incidental
                      thereto.

           H.         "THE BROKER OF RECORD"                N/A


2.         USES:

           A.         Tenant shall not, do or permit anything to be done in or
                      about the Leased Premises, or bring or keep anything in
                      the Leased Premises that may (i) increase the fire and
                      extended coverage insurance premium upon the Building;
                      (ii) injure the Building; or (iii) constitute waste or be
                      a nuisance, public or private, or menace to tenants of
                      adjoining premises or anyone else.

           B.         Landlord  represents  that a Certificate  of Occupancy for
                      the  Leased  Premises  has  been  issued  as of the  Lease
                      Commencement Date.

           C.         Landlord  warrants that as of the date of this Lease,  the
                      Leased Premises can be used for the Permitted Purpose.  In
                      the  event  the  Leased  Premises  cannot  be used for the
                      Permitted  Purpose  at any time  during  the  Lease  Term,
                      either  Landlord  or  Tenant  shall  have  the  option  to
                      terminate this Lease, provided that the Lease shall not be
                      so terminated if Landlord,  within a period of ninety (90)
                      days following the event which caused the Leased  Premises
                      not to be usable for the Permitted  Purpose,  restores the
                      premises  to that  condition  under  which  the  Permitted
                      Purpose can be used for the permitted purpose. If Landlord
                      fails to restore the premises, Tenant shall have the right
                      to use the Leased Premises for any other remaining lawful
                      purpose,  for so  long as the  Leased  Premises  are  then
                      capable of accommodating such uses.

                      Where this paragraph 2C conflicts with paragraph 11,
                      paragraph 11 will control. Where this paragraph 2C
                      conflicts with paragraph 14, paragraph 14 will control.

           D.         Within 15 days following the request of Landlord, Tenant
                      shall acknowledge in writing that it has examined the
                      Leased Premises and accepts the same as being in the
                      condition called for by this Lease, excepting latent
                      defects, other items identified as not completed in
                      accordance with this Lease, and minor construction finish
                      items ("punchlist items") which shall be corrected or
                      completed by Landlord as expeditiously as possible. In
                      the event that a major defect or omission appears in the
                      installation of the major building systems or structure,
                      Landlord agrees to correct any such defect or omission.

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           E.         Tenant shall have a nonexclusive right with other tenants
                      in the Building to use exterior common areas, exclusive
                      of parking areas, outside of the Building, and located on
                      the real estate legally described on EXHIBIT B, in
                      accordance with Landlord's rules and regulations, as
                      described in Paragraph 17 below.


3.         RENT:

           A.         Tenant covenants and agrees to pay to Landlord during the
                      term of this Lease, at the place specified by Landlord,
                      the Base Rent, without deduction or setoff (unless
                      authorized by this Lease), due and payable in advance on
                      the first day of each month. Tenant also covenants and
                      agrees to pay to Landlord Tenant's Pro Rata Share of
                      Building Operating Costs as described in Paragraph 3B
                      below. Base Rent and Tenant's Pro Rata Share of Building
                      Operating Costs, together with other amounts which may be
                      payable by Tenant to Landlord under this Lease, shall
                      sometimes be referred to collectively as " RENT." Rent
                      for any fractional calendar month shall be that
                      proportion of the monthly installment which the number of
                      days during such month bears to the total of days in the
                      month. Rent not paid by the fifth day following written
                      notice that such amount is past due shall be subject to a
                      late charge of three (3%) of the amount due.

           B.         In addition to Base Rent, Tenant shall pay  Tenant's Pro
                      Rata Share of "BUILDING OPERATING COSTS." Building
                      Operating Costs shall mean all expenses, costs and
                      disbursements which Landlord shall pay or become
                      obligated to pay because of or in connection with the
                      maintenance, repair and operation of the Building,
                      including, but not limited to, real estate taxes and
                      assessments, use, sales, or any other taxes (except
                      income taxes) based on rents, personal property taxes on
                      personal property used in the operation of this Building;
                      Landlord's insurance, as described in Paragraph 6 below;
                      utilities not separately metered to individual tenants;
                      costs of leasing or amortization of energy reduction
                      devices and systems, except those included in the
                      building specifications and except those required during
                      the first two years of the Lease Term; maintenance;
                      repairs; redecorating of common areas; cost of roof
                      renovation (which shall be amortized over its expected
                      life and which shall not include roof replacement which
                      occurs after the term or the first extension thereof);
                      janitorial service; operating supplies; property
                      management; Building Services; snow removal; landscaping;
                      costs of leasing or amortizing plants, shrubs, trees, or
                      flowers, and normal maintenance thereof; costs of leasing
                      or amortizing wall hangings, fixtures, paintings, and
                      statues; rubbish removal; tools and equipment used for
                      the daily operation of the Building; air conditioning,
                      heating and elevator repair and maintenance; resurfacing
                      and restriping of parking areas; repair and replacement
                      of car stops and signage; security; wages, payroll taxes,
                      welfare and disability benefits reasonably incurred in
                      the operation of the Building.

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                      Notwithstanding the foregoing, Building Operating Costs
                      shall expressly exclude: (a) cost of decorating,
                      redecorating, or special cleaning, or other services not
                      provided on a regular basis to all tenants of the
                      Building; (b) wages, salaries, fees and fringe benefits
                      paid to administrative or executive personnel or officers
                      or partners of Landlord, unless employed at competitive
                      rates as independent contractors; (c) any charges for
                      depreciation of the Building or equipment; (d) any
                      interest or finance charges; (e) any charges for
                      Landlord's income taxes, excess profit taxes, franchise
                      taxes or similar taxes on Landlord's business; (f) all
                      costs relating to activities conducted for the
                      solicitation of and execution of leases of space in the
                      Building; (g) any costs for which Tenant or other tenants
                      in the Building are being charged other than pursuant to
                      this Paragraph; (h) the costs of correcting defects in
                      the construction of the Building or in the Building
                      Equipment, except that conditions (not occasioned by
                      construction defects) resulting from ordinary wear and
                      tear shall not be deemed defects for the purpose of this
                      category; (i) the costs of any repair made by Landlord
                      because of the total or partial destruction of the
                      Building or the condemnation of a portion thereof; (j)
                      any insurance premium to the extent that Landlord is
                      entitled to reimbursement therefore from Tenant or from
                      any other tenant of the Building; (k) any costs for which
                      Landlord is reimbursed by insurance, warranty, or other
                      source of reimbursement; (1) the cost of any additions or
                      capital improvements to the Building subsequent to
                      original construction; (m) the cost of any repairs,
                      alterations, additions, changes, replacements and other
                      items which, under Generally Accepted Accounting
                      Principles, are properly classified as capital
                      expenditures to the extent that they upgrade or improve
                      the Building, as opposed to replacement of existing items
                      which have worn out; (n) any cost included in Building
                      Operating Costs representing an. amount paid to a related
                      corporation, entity or person which is in excess of the
                      amount which would be paid in the absence of such
                      relationship; (o) the cost of any work or service
                      performed for or facilities furnished to any tenant of
                      the Building to a greater extent or in a manner more
                      favorable to such tenant than that performed for or
                      furnished to Tenant; and (p) the cost of overtime or
                      other expense to Landlord in curing its defaults or
                      performing work expressly provided herein to be borne at
                      Landlord's expense.

           C.         During the period 08/01/89 thru 07/31/90,  Tenant shall be
                      liable for Tenant's Pro Rata Share of Building Operating
                      Costs, not to exceed $4.50 per square foot of the
                      Tenant's total square footage. During the period 08/01/90
                      thru 07/31/91, Tenant shall be liable for Tenant's Pro
                      Rata Share of Building Operating Costs, not to exceed
                      $5.35 per square foot of Tenant's total square footage.
                      During the period 08/01/91 thru 07/31/92, Tenant shall be
                      liable for its entire Pro Rata Share of Building
                      Operating Costs to the extent of all taxes, insurance and
                      utilities, however, Tenant's liability for its Pro Rata
                      Share of all other Building Operating Costs shall be
                      limited to $2.00 per square foot of Tenants total Square
                      Footage, increased annually thereafter by the percentage
                      of increase in the Consumer Price Index of the U.S.
                      Department of Labor Statistics (all urban consumer
                      average) for each twelve (12)

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                      month period ("Lease Year") following Lease Commencement
                      Date. The Index utilized shall be the Index last
                      published for the Phoenix Metropolitan Area.

           D.         Landlord shall make its best estimate as to the amount of
                      Tenant's Pro Rata Share of Building Operating Costs,
                      one-twelfth (1/12) of which shall be payable monthly,
                      together with the monthly installment of Base Rent due
                      and payable by Tenant. Within one-hundred-twenty (120)
                      days after the beginning of each calendar year, Landlord
                      shall give Tenant a statement of Landlord's Estimate of
                      Building Operating Costs. As of the end of each calendar
                      year, Landlord shall compute the actual costs of
                      operating the Building for the previous twelve (12) month
                      period (if the Building has been operating for less then
                      12 months, the costs of operating the Building for a year
                      shall be determined by dividing the actual operating
                      costs by the number of days of actual operation and
                      multiplying by 365). Landlord shall deliver to Tenant
                      notice of such cost and the amount due, if any, from
                      Tenant as soon as possible of the year immediately
                      subsequent to the year to which such costs relate. Tenant
                      shall reimburse Landlord within thirty (30) days after
                      notice of any deficiency between estimated operating
                      costs and actual costs. In the event of overpayment by
                      Tenant, Landlord shall apply the excess to the next
                      successive installments of Rent due hereunder, unless
                      there are no further Rent payments due from Tenant, in
                      which case Landlord shall pay such excess to Tenant
                      within thirty (30) days of such notice from Landlord.

                      Landlord shall, deliver to Tenant a written accounting
                      showing how Building Operating Costs were calculated for
                      the Building for each year. In the event Tenant objects
                      to the statement of Building Operating Costs for any
                      year, Tenant and Landlord agree to cooperate in good
                      faith to resolve any such objection. The foregoing
                      notwithstanding, Tenant shall in no way be relieved of
                      its obligation to pay Tenant's Pro Rata Share of Building
                      Operating Costs as calculated by Landlord during the
                      period in which it is cooperating with Landlord to
                      resolve any objections as provided herein, except that
                      Tenant may withhold a reasonable amount in dispute until
                      the dispute is resolved. Tenant or its representatives
                      shall have the right, with reasonable notice, to examine
                      the accounting records of Landlord during normal business
                      hours. Should such examination reveal a variance of more
                      than five percent (5%) from Landlord's accounting,
                      Landlord agrees to reimburse Tenant for the verified cost
                      of such examination.


4.         UTILITIES:

           Landlord shall provide to the Leased Premises the following utility
           services: water, sewer, electricity and gas. Utility charges for
           which separate billings are not available shall be treated as
           Building Operating Costs. If heat, light, water and any other
           utility services are supplied to and metered directly to the Leased
           Premises, Tenant shall pay the cost thereof, and make

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           any required deposits related thereto. Separate additional charges
           may be made to Tenant, if Tenant, in Landlord's reasonable
           judgement, causes excessive utility system demands where such
           services are not separately metered. Landlord shall notify Tenant in
           writing of any such excessive utility demands prior to any charges
           being made, and if Tenant ceases to cause such excessive demands
           then no charges will be assessed. Landlord does not warrant that any
           of the utility services will be free from interruption caused by
           Unavoidable Delay, as. defined in Paragraph 23 below. Landlord
           warrants that other Tenants in the building will be charged for
           their excessive utility demands, if any, so that Tenant is not
           charged for more than its Pro Rata Share of normal utility costs for
           the building.

           Tenant shall pay for electricity that is separately metered from
           computer room and UPS Room.


5.         BUILDING SERVICES:

           Landlord agrees to maintain in good condition and repair and in
           first class manner all parking and exterior common areas, which
           maintenance shall include lighting, gardening, cleaning, sweeping,
           painting and window cleaning; and to provide for the Leased Premises
           and the Building such other services, including, but not limited to,
           elevator service, public restrooms, air-cooling, heating, and
           interior janitorial services, which interior janitorial services are
           listed on EXHIBIT D attached hereto and made a part hereof. Landlord
           shall maintain and repair the exterior of the Building, its
           structural portions and the roof. The services to be provided by
           Landlord according to this Paragraph 5 shall be deemed to be
           "BUILDING SERVICES". The cost of Building Services shall be
           considered a Building Operating Cost.

           Building Services shall be furnished by Landlord during normal
           working hours (from 7:00 a.m. to 6:00 p.m. weekdays, and from 7:00
           a.m. to 1:00 p.m. on Saturdays), or at such other times as requested
           by Tenant, in which event, Tenant agrees to pay the additional cost,
           if any, reasonably allocated to Tenant, of providing Building
           Services, to the extent of Landlord's actual cost without markup,
           during such other times. Building Services furnished by Landlord
           shall be similar to building services customarily provided by
           landlords of first-class office buildings in the Phoenix, Arizona
           area.


6.         INSURANCE, INDEMNITY:

           A.        Landlord shall secure and maintain throughout the term of
                     this Lease the following insurance (the cost of which
                     shall be a Building Operating Cost) in a form within
                     Landlord's reasonable discretion:

                      (1)        Fire insurance with extended coverage
                                 endorsements attached in the amount of full
                                 replacement value of the Building;

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                      (2)        Comprehensive public liability insurance
                                 (including bodily injury and property damage
                                 insurance) for the Building; and in the amount
                                 of at least $5 million.

                      (3)        Rental abatement insurance against abatement or
                                 loss of rent in case of fire or other casualty.

                      Landlord may, purchase such other insurance as required
                      by its mortgage lenders and treat the cost thereof as a
                      Building Operating Cost. Tenant shall be named as an
                      additional insured on such insurance policy and Landlord
                      shall supply Tenant with a certificate or certificates
                      evidencing such insurance, which certificate or
                      certificates shall provide Tenant thirty (30) days
                      written notice prior to cancellation or reduction in
                      amount of coverage.

           B.         Tenant shall, at its own expense, procure and maintain
                      throughout the term of this Lease:

                      (1)        Comprehensive public liability insurance
                                 insuring Tenant's activities with respect to
                                 the Leased Premises against loss, damage or
                                 liability for personal injury or death,
                                 Landlord's damage to property or commercial
                                 loss occurring on or about the Leased
                                 Premises, in amounts no less than $1,000,000
                                 combined single limit; and

                      (2)        Workmen's compensation insurance in at least
                                 the statutory amounts with respect to any work
                                 or other operation in or about the Leased
                                 Premises.

                      Landlord and Landlord's mortgagee, if any, shall be named
                      as additional insureds under such insurance and such
                      insurance shall be primary and noncontributing with any
                      insurance carried by Landlord. The liability insurance
                      policy shall contain endorsements requiring thirty (30)
                      days notice to Landlord prior to any cancellation or any
                      reduction in amount of coverage. Tenant shall deliver to
                      Landlord, as a condition precedent to its taking
                      occupancy of the Leased Premises, a Certificate or
                      Certificates evidencing such insurance.

           C.         Except to the extent proceeds are paid from Landlord's
                      insurance, Tenant shall indemnify and hold Landlord
                      harmless from and against all demands, suits, fines,
                      liabilities, losses, damages, costs and expenses
                      (including legal expenses) which Landlord may incur or
                      become liable for as a result of any breach by Tenant,
                      its agents, employees, officers, contractors, invitees or
                      licensees of the terms or covenants of this Lease.

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7.         WAIVER OF SUBROGATION:

           Tenant and Landlord each release and relieve the other and waive its
           entire right of recovery against the other for loss or damage
           arising out of or incident to the perils of fire, explosion, or any
           other perils described in the "extended coverage" insurance
           endorsement covering the Building for losses which occur in, on or
           about the Leased Premises or the Building, whether due to the
           negligence of either party, their agents, employees, invitees or
           otherwise to the extent that said loss or damage is covered by
           collectable insurance. Tenant and Landlord agree that all policies
           of insurance obtained pursuant to Paragraph 6 above shall contain
           appropriate waiver of subrogation clauses.


8.         REPAIRS:

           Except for Building Services provided by Landlord, Tenant agrees to
           maintain in a clean, orderly and sanitary condition and keep in good
           repair, the interior of the Leased Premises, ordinary wear and tear
           excepted. Such maintenance and repair shall be at the sole cost of
           Tenant and shall include but not be limited to the maintenance and
           repair of floor covering, ceilings and walls, front and rear doors,
           and all interior glass on the Leased Premises. If Tenant fails to
           maintain or keep the Leased Premises in good repair and such failure
           continues for five days after written notice from Landlord, Landlord
           may perform any such required maintenance and repairs and the costs
           thereof shall be additional Rent payable by Tenant within ten (10)
           days of receipt of any invoice from Landlord.


9.         TENANT'S PROPERTY:

           Furnishings, trade fixtures and moveable equipment, if any, paid for
           and installed by Tenant, shall be the property of Tenant. On
           expiration of this Lease or at anytime during the term of this
           Lease, if there is then no Event of Default, Tenant may remove any
           such property and shall remove any such property if directed by
           Landlord. Tenant shall repair and reimburse Landlord for the cost of
           repairing any damage resulting from removal of Tenant's property. If
           Tenant fails to remove such property as required under this Lease,
           Landlord may do so and Landlord shall not be liable for any loss or
           damage to the property of Tenant which may occur during Landlord's
           removal thereof.


10.        IMPROVEMENTS AND ALTERATIONS BY TENANT

           Tenant acknowledges that the terms of this Lease contemplates the
           leasing of finished space and that Landlord is and will remain the
           owner of all Tenant improvements constructed by Landlord, regardless
           of when those improvements are or were constructed. Accordingly,
           Tenant acknowledges Landlord's right to control the design and
           construction of all Tenant

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           improvements, including removing, altering and redesigning of
           existing Tenant improvements, and agrees that Landlord shall have
           the exclusive right to determine the person or firm to design and
           construct Tenant improvements under this Lease. Until a different
           person or firm is appointed pursuant to notice to the Tenant under
           this Lease, Landlord hereby designates FANWEST Development Company
           as the exclusive firm to provide design and construction services
           for Tenant improvements under this Lease.


11.        CASUALTY:

           If the Leased Premises or the Building are destroyed or damaged by
           fire, earthquake or other casualty to the extent that they are
           untenantable in whole or in part, then Landlord shall, except as
           provided below, proceed with reasonable diligence to rebuild and
           restore the Leased Premises or such part thereof as may be destroyed
           or damaged, and during the period of such rebuilding and
           restoration, this Lease shall remain in full force and effect, and
           Rent shall be abated in the same ratio as the square footage in the
           portion of the Leased Premises rendered untenantable, if any, shall
           bear to the total square footage in the Leased Premises. If Landlord
           shall reasonably determine that such destruction or damage cannot be
           rebuilt and restored within one-hundred-eighty (180) days, it shall
           so notify Tenant within sixty (60) days after the occurrence of such
           damage or destruction. In such event, either Landlord or Tenant may,
           within twenty (20) days after such notice, terminate this Lease. If
           neither party terminates this Lease during such twenty (20) day
           period, this Lease shall remain in effect and Landlord shall
           diligently proceed to rebuild and restore the Leased Premises, and
           Rent shall abate as set forth above.

           Anything to the contrary notwithstanding, in the event the Leased
           Premises are rendered untenantable due to the fault or neglect of
           Tenant, its agents, employees, visitors or licensees, there shall be
           no abatement of Rent as provided above, except to the extent such
           loss of Rent shall be payable from the proceeds of the rental
           abatement insurance maintained by Landlord in accordance with
           Paragraph 6 above.


12.        ASSIGNMENT, LETTING AND SUBLETTING:

           A.         Tenant, its legal representatives and successors in
                      interest shall have the right to assign, let or sublet or
                      permit the assigning, letting or subletting of this
                      Lease, the Leased Premises or any part thereof,
                      respectively, without first obtaining the written consent
                      of Landlord. Any such assignment, letting or subletting
                      shall be in conformance with the terms of the Lease, for
                      a use which is permitted under the Lease, and shall not
                      relieve Tenant from its obligations under this Lease. For
                      the purpose of this section, an assignment, letting or
                      subletting to any governmental agency will not be deemed
                      to be in conformance with the terms of the Lease, and the

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                      written consent of Landlord, which may be withheld in
                      Landlord's sole discretion, shall be required prior to
                      any such assignment, letting or subletting.


           B.         Tenant may, from time to time during the term of this
                      Lease, without consent of Landlord, place a mortgage or
                      deed of trust upon Tenant's leasehold estate and rights
                      hereunder as security for payment of an indebtedness. Any
                      such mortgage or deed of trust shall be a lien upon only
                      Tenant's leasehold estate hereunder and shall not be a
                      lien upon Landlord's reversionary (including fee)
                      interest in the Leased Premises.

                      When giving notice to Tenant with respect to any default
                      hereunder, Landlord shall also serve a copy of such
                      notice upon any such lender of Tenant (herein referred to
                      as "MORTGAGEE"); provided such Mortgagee has given
                      Landlord written notice of its interest in the Leased
                      Premises and provided Landlord with its address for any
                      such notice. No such notice of default shall be deemed to
                      have been given to Tenant unless and until such notice
                      shall have been delivered to Mortgagee as provided in the
                      previous sentence.

                      In case Tenant shall default in the performance of any of
                      the terms, covenants, agreements and conditions of this
                      Lease on Tenant's part to be performed, any such
                      Mortgagee shall have the right, within the grace period
                      available to Tenant, plus an additional ten (10) days
                      beyond said grace period, for curing such default, to
                      cure or make good such default or to cause the same to be
                      cured or made good, provided however, if the Mortgagee
                      has cured any default which can be cured by the payment
                      of money within the 10 day period described above, the
                      Mortgagee shall have a reasonable time in which to cure
                      any non-monetary default of Tenant, so long as such time
                      period does hot extend beyond 6 months from the
                      Mortgagees receipt of notice of an Event of Default (as
                      defined in Paragraph 21), and so long as Mortgagee is
                      attempting to cure the default with due diligence.


13.        LIEN:

           Tenant shall keep the Leased Premises and the Building free from any
           liens arising out of any work performed, materials furnished, or
           obligations incurred by Tenant, provided, however, that Tenant shall
           have the right to contest any such liens so long as Tenant obtains,
           within 30 days following attachment of' the lien, a commitment for
           Title Insurance in favor of Landlord insuring over the lien or so
           long as Tenant provides a bond securing payment of the lien.

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14.        CONDEMNATION:

           If the whole or any part of the Leased Premises shall be taken under
           power of eminent domain or like power, or sold under imminent threat
           thereof to any public authority or private entity having such power,
           this Lease shall terminate as to the part of the Leased Premises so
           taken or sold, effective as of the date possession is required to be
           delivered to such authority or entity. Rent for the remaining term
           shall be reduced in the proportion that the Total Square Footage of
           the Leased Premises is reduced by the taking. If a partial taking or
           sale of the Building or the Leased Premises (i) substantially
           reduces the area of the Leased Premises resulting in a substantial
           inability of Tenant to use the Leased Premises for Tenant's business
           purposes, or (ii) renders the Building unviable to Landlord, Tenant
           in the case of (i), or Landlord in the case of (ii) may terminate
           this Lease by notice to the other party within thirty (30) days
           after the terminating party receives a written notice of the portion
           to be taken or sold, to be effective 'when the portion is taken or
           sold. All condemnation awards and similar payments shall be paid and
           belong to Landlord, except any amounts awarded or paid specifically
           for Tenant's trade fixtures and relocation costs, provided such
           awards do not reduce Landlord's award. Nothing contained herein
           shall diminish Tenant's right to deal on its own behalf with the
           condemning authority.


15.        CONSTRUCTION CONDITIONS:

           A.         Landlord shall construct the improvements (the
                      "IMPROVEMENTS") to the Additional Expansion Space,
                      pursuant to the Work Letter attached hereto as Exhibit C
                      in a good and workmanlike manner substantially in
                      accordance with agreed plans and specifications. The
                      expense of constructing the improvements shall be borne
                      as provided in the Work Letter.

           B.         Landlord shall bear the risk of loss to the Improvements
                      for any Space of the Leased Premises until the Lease
                      Commencement Date for that Space occurs. Tenant may
                      inspect the Improvements at reasonable times so long as
                      such inspections do not interfere with Landlord's
                      construction activities. Tenant shall not exercise any
                      control over the persons performing construction
                      activities on the Leased Premises.

           C.         To the extent-that Paragraph 15 or Paragraph 16 below
                      conflicts with the Work Letter, the Work Letter shall
                      take control.


16.        OCCUPANCY, LEASE COMMENCEMENT DATE:

           The Additional Expansion Space shall be ready for occupancy on such
           dates that the improvements are substantially completed in
           accordance with Paragraph 15 above, subject only to items which will
           not materially affect the use of Additional Expansion Space for the
           Permitted Purposes. Prior to occupying the Additional Expansion
           Space, Tenant shall

                                      -12-


   13





           execute and deliver to Landlord a letter in the form attached hereto
           and made a part hereof as EXHIBIT E , acknowledging the Date
           ofOccupancy of the Additional Expansion Space.

17.        RULES AND REGULATIONS:

           Tenant covenants that Tenant and its agents, employees, invitees, or
           those claiming under Tenant will at all times observe, perform and
           abide by all reasonable rules and regulations promulgated by
           Landlord, from time to time, as long as such rules and regulations
           do not conflict with any provision of this Lease. Tenant must first
           consent to any such modifications, which consent shall not be
           unreasonably withheld. Landlord's rules and regulations in effect on
           the date hereof are attached hereto and made a part hereof as
           EXHIBIT F.

18.        PARKING:

           Tenant and its employees and invitees shall have the non-exclusive
           privilege to use the surface parking in general areas reasonably
           designated by Landlord pursuant to the rules and regulations
           relating to parking adopted by Landlord from time to time. Tenant
           and its employees and invitees shall have the exclusive privilege to
           use 404 covered parking spaces, as shown on EXHIBIT A, pursuant to
           the rules and regulations relating to parking adopted by Landlord
           from time to time, pursuant to Paragraph 17 above.

           Tenant agrees not to overburden the surface parking facilities, if
           any, and agrees to cooperate with Landlord and other tenants in the
           use of such facilities. Landlord shall exert reasonable efforts to
           police and tow vehicles which are not authorized to park in spaces
           exclusively assigned to Tenant. Landlord may, at its own discretion,
           change the location of the parking spaces available to Tenant, its
           employees and invitees, provided that after such change, there shall
           be available to Tenant and its employees and invitees approximately
           the same number of spaces as available before the change, which
           spaces shall be located on the real estate legally described on
           EXHIBIT B. Landlord may at its own discretion valet park or
           implement an alternate parking plan, on said premises, provided that
           after such implementation there shall be made available to Tenant
           and its employees and invitees approximately the same number of
           spaces as available before the change.


19.        ACCESS:

           Tenant shall permit Landlord to enter the Leased Premises at
           reasonable times for the purpose of inspecting, altering and
           repairing the Leased Premises and ascertaining compliance by Tenant
           with the provisions of this Lease. Landlord may also show the Leased
           Premises to prospective Purchasers or renters during regular
           business hours and upon reasonable notice, provided that Landlord
           shall not unreasonably interfere with Tenant's business operations.

                                      -13-


   14





20.        SIGNS:

           All signs and symbols placed in the doors or windows or elsewhere
           about the Leased Premises, or upon any other part of the Building,
           including building directories, shall be subject to the approval of
           Landlord. Tenant shall be entitled to place signs within the
           interior of the Leased Premises without having first obtained
           Landlord's approval. Upon expiration of this Lease, all signs
           installed by Tenant shall be removed and any damage resulting
           therefrom shall be promptly repaired, or such removal and repair may
           be done by Landlord and the cost thereof charged to Tenant as Rent
           hereunder.


21.        TENANT'S DEFAULT:

           It shall be an "Event of Default" if (i) Tenant shall fail to pay
           any monthly installment of Rent or any other charge or payment
           required of Tenant hereunder within five (5) days of written notice;
           (ii) Tenant shall violate or fail to perform any of the other
           conditions, covenants or agreements herein made by Tenant, and such
           violation or failure shall continue for a period of fifteen (15)
           days after written notice thereof to Tenant by Landlord; (iii)
           Tenant shall make a general assignment for the benefit of its
           creditors or shall file a petition for bankruptcy or other
           reorganization, liquidation, dissolution or similar relief;

           (iv) a proceeding is filed against Tenant seeking any relief
           mentioned in (iii) above which is not dismissed within thirty (30)
           days after filing; (v) a trustee, receiver or liquidator shall be
           appointed for Tenant or a substantial part of its property; (vi)
           Tenant shall default in any obligation which Tenant may have to
           Landlord pursuant to the Loan Agreement of even date herewith by and
           between the parties hereto.

           If an Event of Default occurs, then Landlord may either: (i) give
           Tenant written notice of Landlord's intention to terminate this
           Lease on the date of such given notice or any later date specified
           therein, and on such specified date Tenant's right to possession of
           the Leased Premises shall cease and this Lease shall thereupon be
           terminated; or (ii) without further notice, reenter and take
           possession of the Leased Premises, or any part thereof, without
           authorization of any court, and repossess the same as of Landlord's
           former estate, and expel Tenant and those claiming through or under
           Tenant, and remove the effects of either or both without being
           deemed guilty of any manner of trespass and without prejudice to any
           remedies for arrears of rent, preceding breaches of covenants, or
           loss of profits. Should Landlord elect to reenter as provided
           herein, or should Landlord take possession pursuant to legal
           proceedings or any notice provided for by law, Landlord may, from
           time to time, without terminating this Lease, relet the Leased
           Premises or any part thereof, on behalf of Tenant for such term or
           terms and at such rent or rents, and upon such other terms and
           conditions, as Landlord may deem advisable in its sole discretion
           (including concessions, free rent, and payment of commissions) with
           the right to make alterations and repairs to the Leased

                                      -14-


   15





           Premises. No such reentry or taking of possession of the Leased
           Premises by Landlord shall be construed as an election on Landlord's
           part to terminate this Lease, unless a written notice of termination
           is given to Tenant by Landlord.

           In the event Landlord does not elect to terminate this Lease, but on
           the contrary elects to take possession, then such repossession shall
           not relieve Tenant of its obligations and liability under this
           Lease, all of which shall survive such repossession. In the event of
           such repossession, Tenant shall pay to Landlord as Rent all Rent
           which would be payable hereunder if such repossession had not
           occurred, less the net proceeds, if any, of any reletting or the
           value of Landlord's use, if any, of the Leased Premises after
           deducting a11 of Landlord's expenses in connection with such
           reletting, including, but without limitation, all repossession
           costs, brokerage commissions, legal expenses, expenses of employees,
           costs of alterations, expenses of preparation for reletting, rental
           concessions and free rent.

           Tenant shall pay such Rent to Landlord on the days on which the Rent
           would have been payable hereunder if possession had not been
           retaken.

           If, however, this Lease is terminated by Landlord, Landlord shall be
           entitled to recover such damages from Tenant to which it may be
           entitled in Law or in Equity, including all of Landlord's costs of
           reletting the Leased Premises, including repair, alteration, and
           preparation of Leased Premises for reletting, brokerage commissions,
           attorneys' fees, rental concessions, and free rent. Said amount
           shall be immediately due and payable by Tenant to Landlord. Any
           amount, due to Landlord hereunder may be collected after
           termination, but prior to the original expiration of the Lease Term.

22.        REMOVAL OF PROPERTY:

           In an Event of Default, Landlord shall have the right, but not the
           obligation, to remove from the Leased Premises all personal
           property, fixtures, furnishings and other property located therein,
           and to store such property in any place selected by Landlord,
           including, but not limited to, a public warehouse, at the expense
           and risk of the owners thereof, with the right to sell such stored
           property seven (7) days after notice to Tenant, after it has been
           stored for a period of thirty (30) days or more. The proceeds of
           such sale shall be applied first to the cost of such sale, second to
           the payment of the charges for storage, if any, and third to the
           payment of other sums of money which may then be due from Tenant to
           Landlord under any of the terms hereof, the balance, if any, to be
           paid to Tenant.

23.        QUIET ENJOYMENT, INABILITY TO PERFORM:

           A.         If, and so long as, Tenant pays Rent and keeps and
                      performs each and every term, covenant and condition
                      herein contained on the part and on behalf of Tenant to be
                      kept and performed, Tenant shall quietly enjoy the Leased
                      Premises without hindrance

                                     -15-


   16





                      or molestation by Landlord, subject to the terms,
                      covenants and conditions of this Lease and the Superior
                      Instruments, as defined and provided in Paragraph 35
                      below.

           B.         Landlord shall pay all taxes and assessments so as not to
                      jeopardize Tenant's use of the Leased Premises. The
                      foregoing notwithstanding, Landlord shall be entitled to
                      contest any tax or assessment which it deems to be
                      improperly levied against the

                      Building so long as Tenant's use of the Leased Premises
                      is not interfered with.

           C.         Except as provided in this Lease, this Lease and the
                      obligations of Tenant to pay Rent and perform all of the
                      terms, covenants and conditions on the part of

                      Tenant to be performed shall in no way be affected,
                      impaired or excused because Landlord, due to Unavoidable
                      Delay, is (a) unable to fulfill any of its obligations
                      under this Lease, or (b) unable to supply or delayed in
                      supplying any service expressly or implied to be
                      supplied, or (c) unable to make or delayed in making any
                      repairs, replacements, additions, alterations or
                      decorations, or (d) unable to supply or delayed in
                      supplying any equipment or fixtures. Landlord shall in
                      each instance exercise reasonable diligence to effect
                      performance when and as soon as possible.

                      "UNAVOIDABLE DELAY" shall mean any and all delays beyond
                      Landlord's reasonable control, including without
                      limitation, delay caused by Tenant, governmental
                      restrictions, governmental regulations or controls, undue
                      delays by governmental authorities, order of civil,
                      military, or naval authority, governmental preemption,
                      strikes, labor disputes, lockouts, shortage of labor or
                      materials, inability to obtain materials or reasonable
                      substitutes therefor, default of any contractor or
                      subcontractor, acts of God, fire, earthquake, floods,
                      explosions, actions of the elements, extreme weather
                      conditions, enemy action, civil commotion, riot or
                      insurrection, delays in obtaining governmental permits or
                      approvals or any other cause beyond Landlord's reasonable
                      control.


24.        HOLD OVER TENANCY:

           If (without execution of a new lease or written extension) Tenant
           shall hold over after the expiration of the term of this Lease,
           Tenant may, at Landlord's election, be deemed to be occupying the
           Leased Premises as a tenant from month to month, which tenancy may
           be terminated as provided by law. During such tenancy, Tenant agrees
           to pay to Landlord Tenant's Pro Rata Share of Building Operating
           Costs and 200% of the then current Base Rent, as set forth herein,
           unless a different rate is agreed upon, and to be bound by all of
           the terms, covenants and conditions as herein specified, so far as
           applicable. The foregoing notwithstanding, in the event Landlord and
           Tenant are negotiating in good faith over the extension of the Lease
           Term for a period exceeding the renewal period contemplated in

                                      -16-


   17





           Paragraph 40 of the Lease, Tenant shall pay Rent at the same rate as
           was due during the then current renewal period, for a period not to
           exceed sixty (6O) days following the termination date of such
           renewal period. At the end of such sixty (60) day period, Tenant
           agrees to pay to Landlord Tenant's Pro Rata Share of Building
           Operating Costs and 200% of the then current Base Rent until
           Tenant's occupancy is terminated.

25.        ATTORNEYS' FEES:

           In the event either party requires the services of an attorney in
           connection with bringing suit to enforce the terms of this Lease, or
           for the breach of any covenant or condition of this Lease, or for
           the restitution of the Leased Premises to Landlord and/or eviction
           of Tenant during said term, or after the expiration thereof, the
           party prevailing in any such legal action shall be entitled to an
           award for all legal costs and expenses, including, but not limited
           to, a reasonable sum for attorneys' fees.


26.        AMENDMENT, WAIVER:

           This Lease constitutes the entire agreement between the parties.
           This Lease shall not be amended or modified except in writing by
           both parties. No covenant or term of this Lease shall be waived
           except with the express written consent of the waiving party whose
           forbearance or indulgence in any regard shall not constitute a
           waiver of such covenant or term. Failure to exercise any right in
           one or more instances shall not be construed as a waiver of the
           right to strict performance or as an amendment to this Lease.


27.        NOTICES:

           All notices required by this Lease shall be in writing, sealed in an
           envelope and delivered in person, or mailed by U.S. Registered or
           Certified Mail, return receipt requested, postage prepaid to the
           addresses specified below:

           A.        If intended for Landlord:
                     Missouri Falls Associates Limited Partnership
                     645 East Missouri Avenue
                     Phoenix, Arizona 85012

                                      -17-


   18





           B.        If intended for Tenant:

                     Northern Automotive Corporation
                     645 East Missouri Avenue Phoenix, Arizona 85012
                     Attn: Vice President and General Counsel

                     or to such other addresses as either party designates by
                     notice, as provided in this paragraph, to the other party,
                     from time to time. Notice shall be effective as of the
                     date delivered in person or the date on which such
                     delivery is rejected.


28.        BINDING EFFECT, GENDER:

           Subject to the provisions in Paragraph 12, this Lease shall be
           binding upon and inure to the benefit of the parties and their
           successors and assigns. It is understood and agreed that the terms
           "Landlord" and "Tenant" and verbs and pronouns in the singular
           number are uniformly used throughout this Lease regardless of
           gender, number or fact of incorporation of the parties hereto.


29.        ADDENDA AND ATTACHMENTS:

           The typewritten addenda, exhibits or supplemental provisions, if
           any, attached or added hereto, are made a part of this Lease by
           reference and the terms thereof shall control over any inconsistent
           provisions in the paragraphs of this Lease.


30.        LIMITATION OF LANDLORD'S LIABILITY:

           The obligations of Landlord under this Lease do not constitute
           personal obligations of the individual partners, directors,
           officers, or shareholders of Landlord, and Tenant shall look solely
           to the real estate that is the subject of this Lease and to no other
           assets of the Landlord for satisfaction of any liability in respect
           of this Lease and will not seek recourse against the individual
           partners, directors, officers or shareholders of Landlord or any of
           their personal assets for such satisfaction or for any deficiency
           judgement should Tenant be unable to satisfy any liability owed to
           it.

                                      -18-


   19





31.        LANDLORD'S DEFAULT:

           If Landlord defaults in performance of its obligation hereunder,
           Tenant shall have all remedies available at law or in equity.


32.        LANDLORD'S RESERVED RIGHTS:-

           Without notice and without liability to Tenant, Landlord shall have
           the right to:

                      (1)        Change (i) the name of the Building and (ii)
                                 the street address of the Building if required
                                 to do so by an appropriate authority;

                      (2)        Install and maintain  reasonable  signs on the
                                 exterior of the Building;

                      (3)        Grant utility easements or other easements to
                                 such parties, or replat, subdivide or make
                                 such other changes in the legal status of the
                                 land underlying the Building, as Landlord
                                 shall deem necessary, provided such grant or
                                 changes do not substantially or materially
                                 interfere with Tenant's use of the Leased
                                 Premises as intended under this Lease; and

                      (4)        Sell the Building and assign this Lease to the
                                 purchaser (and upon such assignment be
                                 released from all of its obligations under
                                 this Lease which accrue after such
                                 assignment). Tenant agrees to attorn to such
                                 purchaser, or any other successor or assign of
                                 Landlord through foreclosure or deed in lieu
                                 of foreclosure or otherwise and to recognize
                                 such person as Landlord under this Lease.


33.        OFFSET STATEMENT:

           Within twenty (20) days after request therefor by Landlord, its
           agents, successors or assigns, Tenant shall deliver, in recordable
           form, a certificate to any proposed mortgagee or purchaser, or to
           Landlord, together with a true and correct copy of this Lease,
           certifying, if applicable (i) that this Lease is in full force and
           effect, without modification, (ii) the amount, if any, of prepaid
           rent and security deposit paid by Tenant to Landlord, (iii) that
           Landlord to the best of Tenant's knowledge, as of the date of the
           certificate, has performed all of its obligations due to be
           performed under this Lease and that there are no defenses,
           counterclaims, deductions or offsets outstanding, or other excuses
           for Tenant's performance under this Lease, or stating those claimed
           by Tenant, and (iv) any other fact reasonably requested by Landlord
           or such proposed mortgagee or purchaser, which does not modify or
           conflict with Tenant's rights under this Lease. Tenant's failure to
           deliver said statement in time shall be conclusive upon Tenant: (a)
           that this Lease is in full force and effect, without modification
           except as may be represented by Landlord, (b) that there are no
           uncured defaults in Landlord's performance and Tenant has no right
           of offset, counterclaim defenses or deduction

                                      -19-


   20





           against Rent or Landlord hereunder; and (c) that no more than one
           period's Rent has been paid in advance.


34.        ACCORD AND SATISFACTION:

           No receipt and retention by Landlord of any payment tendered by
           Tenant in connection with this Lease will give rise to, or support,
           or constitute an accord and satisfaction, notwithstanding any
           accompanying statement, instruction or other assertion to the
           contrary (whether by notation on a check or in a transmittal letter
           or otherwise), unless Landlord expressly agrees to an accord and
           satisfaction in a separate writing duly executed by the appropriate
           persons. Landlord may receive and retain, absolutely and for itself,
           any and all payments so tendered, notwithstanding any accompanying
           instructions by Tenant to the contrary. Landlord will be entitled to
           treat any such payments as being received on account of any item or
           items or Rent, interest, expense or damage due in connection
           herewith in such amounts and in such order as Landlord may determine
           at its sole option.


35.        SEVERABILITY:

           The parties intend this Lease to be legally valid and enforceable in
           accordance with all of its terms to the fullest extent permitted by
           law. If any term hereof shall be finally hold to be invalid or
           unenforceable, the parties agree that such term shall be stricken
           from this Lease, the same as if it never had been contained herein.
           Such invalidity or unenforceability shall not extend to or otherwise
           affect any other term of this Lease, and the unaffected terms hereof
           shall remain in full force and effect to the fullest extent
           permitted by law, the same as if such stricken term never had been
           contained herein.


36.        SUBORDINATION:

           The rights of Tenant hereunder are, and shall be, at the election of
           any mortgagee, subject and subordinate to the lien of any deeds of
           trust, mortgages, the encumbrance of any leasehold financing, or the
           lien resulting from any other method of financing or refinancing,
           now or hereafter in force against the Building of which the Leased
           Premises are a part, and to all advances made, or hereafter to be
           made upon the security thereof (hereafter referred to as the
           "Superior Instruments". The foregoing notwithstanding, for any liens
           or Superior Instruments filed of record after the execution of this
           Lease, the rights of Tenant under this Lease shall not be subject or
           subordinated to such liens or Superior Instruments unless the
           holders thereof execute an agreement in form and substance similar
           to the agreement attached hereto as EXHIBIT G (the "Attornment and
           Nondisturbance Agreement"). If requested, Tenant agrees to execute
           whatever reasonable documentation may be required to further
           effectuate the provisions of this paragraph.

                                      -20-


   21





           Tenant agrees to attorn to any purchaser of the Building, or any
           other successor or assign of Landlord through foreclosure or deed in
           lieu of foreclosure, in return for and upon delivery to Tenant by
           such purchaser or mortgagee, as the case may be, of an agreement
           substantially in the form of the Attornment and Nondisturbance
           Agreement, attached hereto as Exhibit G.

37.        TIME:

           Time is of the essence hereof.

38.        APPLICABLE LAW:

           This Lease shall be construed according to the laws of the State of
           Arizona and venue shall be in Maricopa County, Arizona.

39.        BROKER'S INDEMNIFICATION:

           As part of the consideration for the granting of this Lease, Tenant
           represents and warrants to Landlord that no broker or agent
           negotiated or was instrumental in the negotiation or consummation of
           this Lease except the Broker of Record, and Tenant agrees to
           indemnify Landlord against any loss, expenses, cost or liability
           incurred by Landlord as a result of a claim by any broker or finder
           claiming through Tenant.

40.        OPTION TO EXTEND:

           Landlord hereby grants Tenant two options to extend the term of the
           Lease for three five-year periods. Except as provided herein, each
           option is granted on the same terms and conditions provided for in
           the Lease, except for Rent and Lease term. The Base Rent for the
           extension periods shall be as follows:






                                                MONTHLY       ANNUAL BASE RENT
                             PERIOD            BASE RENT      PER SQUARE FOOT
                                                      
First Option               08/01/99- 07/31/02               See subparagraph B

Second Option              08/01/02 - 07/31/07              See subparagraph C



           Monthly Base Rent is calculated on the space initially leased, and
           may be modified as a result of either a remeasurement of rentable
           area in the Building as provided in paragraph 1, or of

                                      -21-


   22





           additional space being leased by Tenant in accordance with Paragraph
           41. The above option terms shall apply to any such additional space
           leased by Tenant.

           Tenant must give notice of its intent to exercise each option
           granted herein within 180 days prior to expiration of the Lease Term
           then in effect. The options may not be exercised if Tenant is in
           default under this Lease.

           B. The Base rent shall be 95% of the then current Fair Market Rental
           Value (FMRV) as defined in Subparagraph 40D below, provided however,
           Base Rent shall be no less than $18.95 per square foot of Tenant's
           Total Square Footage and no more than $24.00 per square foot of
           Tenant's Total Square Footage.

           C. The Base Rent shall be 95% of the then current Fair Market Rental
           Value (FMRV) as defined in Subparagraph 40D below, provided however,
           Base Rent shall be no less than $24.00 per square foot of Tenant's
           Total Square Footage and no more than $28.00 per square foot of
           Tenant's Total Square Footage.

           D. Fair Market Rental Value (hereinafter referred to as "FMRV") as
           used in this Section shall be the Base Rent calculated at the then
           prevailing rate for similar space by a credit tenant in comparable
           buildings located within the Phoenix Metropolitan Area. Said FMRV
           shall be declared by Landlord in writing to Tenant not less than
           eight (8) months prior to the anniversary of the commencement of the
           extended term. Upon exercise of Tenant's option to extend the term
           as herein provided, Tenant shall notify Landlord in writing of its
           acceptance or rejection of such Base Rent. If within ten (10) days
           of Tenant's registering it's rejection of Landlord's declaration the
           parties have not agreed upon FMRV, it shall be established by
           arbitration under the rules of American Arbitration Association then
           in effect or by such other method, if any, as the parties may then
           agree upon. The parties hereto agree to prevail upon the American
           Arbitration Association, or such other party as may then be agreed
           upon, to select qualified real estate brokers, appraisers, or
           building managers to comprise the arbitration panel, and agree
           further that the FMRV established by the arbitration panel shall be
           binding. In the event the results of the arbitration are not known
           by the tenth anniversary of the Commencement Date, Tenant shall pay
           a rental equal to the Base Rent, as adjusted in accordance with
           Section 3 of the Lease, payable in the month immediately preceding
           the tenth anniversary of the Commencement Date (hereinafter defined
           as the "Interim Rent") from the tenth anniversary of the
           Commencement Date until such time as the FMRV has been established
           by the arbitration panel.

           Such FMRV shall be used to calculate the Base Rent which would have
           been payable by Tenant commencing from the tenth anniversary of the
           Commencement Date and ending on the date FMRV is established by
           arbitration, had FMRV been charged commencing on the tenth
           anniversary of the Commencement Date. From the Base Rent based on
           FMRV is

                                      -22-


   23





           greater than Interim Rent, Tenant shall pay the difference, in lump
           sum, on the first day of the month following the determination of
           FMRV, or in the event FMRV is less than Interim Rent, Landlord shall
           issue a credit for the difference against Base Rent otherwise
           payable on the first day of the month following determination of
           FMRV.


41.        RIGHT OF FIRST REFUSAL

           A.         Provided that no event of default shall have occurred and
                      be continuing, Tenant shall have a right of first refusal
                      for any space in the Building. If Landlord intends to
                      offer such space to a prospective tenant, Landlord shall,
                      prior to execution of a lease, first notify Tenant in
                      writing of the size and location of the space (hereafter
                      referred to as the "Additional Premises"). Tenant shall
                      have 10 days to notify Landlord in writing, of its
                      election to exercise its right of first refusal. If
                      Tenant fails to so notify Landlord or elects not to
                      exercise the right of first refusal, its right to lease
                      the Additional Premises shall terminate. If Tenant elects
                      to exercise its right of first refusal, Tenant shall be
                      obligated to lease the Additional Premises on the same
                      terms and conditions as this lease except Landlord shall
                      complete the premises substantially as required for the
                      Additional Expansion Space.

                      1.         The Term shall commence as of the date Tenant
                                 occupies such space and shall terminate upon
                                 expiration or earlier termination of the Term
                                 of this Lease;

                      2.         Tenant's Pro Rata Share shall be recalculated

                                 to include the number of rentable square feet
                                 in the Additional Premises;

                      3.         Tenant shall be provided parking equal to one
                                 (1) parking space per 250 useable square feet
                                 of the Additional Premises.

                      4.         In the event the prospective lease is for a
                                 term of five or more years and the offer is
                                 received or made during the last two years of
                                 the term of this Lease, Landlord shall notify
                                 Tenant of such offer as herein required, and,
                                 if Tenant desires to accept such offer, it
                                 must likewise agree to extend the term of this
                                 Lease for an additional option period. If no
                                 such periods exist, Tenant shall have no
                                 rights under this paragraph with respect to
                                 such offer.

                      5.         Tenant shall not have the right to sublet Such
                                 Additional Space to the third party to whom
                                 the Landlord offered the space for a period
                                 for one (1) year after such offer.

           B.         This right of first refusal is not a continuing right.
                      Once Additional Premises is offered to Tenant and such
                      right is not exercised by Tenant then landlord shall have
                      no further obligation to offer such space to Tenant
                      during the Term.

                                      -23-


   24





This Lease is executed as of the date first above written.



Subscribed and sworn before                   LANDLORD:
me this 1st of August
1989.                                         -------------------------------

- ------------------------------                -------------------------------
Notary Public
ATTEST:                                       By:
       -----------------------                   ----------------------------
                                              Its:
                                                 ----------------------------


Subscribed and sworn before me                TENANT:
this 12th of May
1989.                                         -------------------------------

- ------------------------------                -------------------------------


Notary Public
ATTEST:                                       By:
       -----------------------                   ----------------------------
ATTEST:                                       Its:
       -----------------------                   ----------------------------

                                              By:
                                                 ----------------------------
                                              Its:
                                                 ----------------------------

                                      -24-