EXHIBIT 4.2

              Form of Stock Option Agreement to be entered into
                    with respect to Incentive Stock Options

                                     



                            STOCK OPTION AGREEMENT

                 FOR INCENTIVE STOCK OPTIONS UNDER SECTION 422
                         OF THE INTERNAL REVENUE CODE
                                PURSUANT TO THE
                              GFSB BANCORP, INC.
                            1995 STOCK OPTION PLAN
                            ----------------------
                          FOR OFFICERS AND EMPLOYEES

     STOCK  OPTIONS for a total of ________  shares of Common  Stock,  par value
$.10 per share, of GFSB Bancorp, Inc. (the "Company"),  which Option is intended
to qualify as an  Incentive  Stock  Option  under  Section  422 of the  Internal
Revenue Code of 1986, as amended, is hereby granted to ________________________
(the  "Optionee")  at the price  determined  as provided in, and in all respects
subject to the terms,  definitions  and provisions of the 1995 Stock Option Plan
(the "Plan") adopted by the Company which is  incorporated by reference  herein,
receipt of which is hereby acknowledged.

     1. Option Price.  The Option price is $________ for each Share,  being 100%
of the fair market value, as determined by the Committee, of the Common Stock on
the date of grant of this Option (January 5, 1996).

     2. Exercises of Option. This Option shall be exercisable in accordance with
provisions  of the Plan,  provided  the  holder of such  Option is an  employee,
director or director emeritus of the Corporation as of such date, as follows:

            (a)   Schedule of Rights to Exercise.

                     Date                          Percentage of Total Shares
                                                        Awarded Which Are
                                                         Non-forfeitable
                                                         ---------------

Upon grant.....................................                0%
As of January 5, 1997..........................                20%
As of January 5, 1998..........................                40%
As of January 5, 1999..........................                60%
As of January 5, 2000..........................                80%
As of January 5, 2001..........................               100%


      Notwithstanding  any  provisions in this Section 2, in no event shall this
Option be exercisable  prior to six months following the date of grant.  Options
shall be 100%  vested  and  exercisable  upon the  death  or  disability  of the
Optionee,  or upon a Change in Control of the Company,  subject to non-objection
by the Office of Thrift Supervision ("OTS").

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            (b)  Method  of  Exercise.  This  Option  shall  be exercisable by a
written notice which shall:

                    (i) State the election to exercise the Option, the number of
      Shares with  respect to which it is being  exercised,  the person in whose
      name the stock certificate or certificates for such Shares of Common Stock
      is to be registered,  his address and Social  Security  Number (or if more
      than one,  the  names,  addresses  and  Social  Security  Numbers  of such
      persons);

                   (ii) Contain such  representations  and  agreements as to the
      holder's  investment intent with respect to such shares of Common Stock as
      may be satisfactory to the Company's counsel;

                  (iii) Be signed by the person or persons  entitled to exercise
      the Option and, if the Option is being  exercised by any person or persons
      other than the Optionee, be accompanied by proof,  satisfactory to counsel
      for the  Company,  of the right of such person or persons to exercise  the
      Option; and

                   (iv) Be  in  writing and delivered in person or by certified
mail to the Treasurer of the Company.

      Payment  of the  purchase  price of any Shares  with  respect to which the
Option is being  exercised  shall be by certified or bank  cashier's or teller's
check.  The certificate or  certificates  for shares of Common Stock as to which
the Option shall be exercised  shall be  registered in the name of the person or
persons exercising the Option.

            (c)  Restrictions  on Exercise.  This Option may not be exercised if
the issuance of the Shares upon such  exercise  would  constitute a violation of
any applicable federal or state securities or other law or valid regulation.  As
a condition to the Optionee's  exercise of this Option,  the Company may require
the person exercising this Option to make any representation and warranty to the
Company as may be required by any applicable law or regulation.

      3.  Non-transferability  of Option.  This Option may not be transferred in
any manner otherwise than by will or the laws of descent or distribution and may
be exercised during the lifetime of the Optionee only by the Optionee. The terms
of this  Option  shall be binding  upon the  executors,  administrators,  heirs,
successors and assigns of the Optionee.

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     4. Term of  Option.  This  Option may not be  exercised  more than ten (10)
years  from the date of grant of this  Option,  as set forth  below,  and may be
exercised  during  such term only in  accordance  with the Plan and the terms of
this Option.

     5.  Related  Matters.  Notwithstanding  anything  herein  to the  contrary,
additional  conditions or restrictions  related to such Options may be contained
in the Plan or the resolutions of the Plan Committee  authorizing  such grant of
Options.

                                          GFSB Bancorp, Inc.

Date of Grant: January 5, 1996            By:________________________
              


Attest:



________________________________



[SEAL]

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                     INCENTIVE STOCK OPTION EXERCISE FORM
                     ------------------------------------

                                PURSUANT TO THE
                              GFSB BANCORP, INC.
                            1995 STOCK OPTION PLAN


                                                       ________________________ 
                                                                (Date)

GFSB Bancorp, Inc.
221 West Aztec
Gallup, New Mexico  87301

Dear Sir:

     The  undersigned  elects to exercise the Incentive Stock Option to purchase
________  shares,  par value $.10, of Common Stock of GFSB Bancorp,  Inc., under
and pursuant to a Stock Option Agreement dated ________, 19____.

      Delivered  herewith is a certified  or bank  cashier's  or teller's  check
and/or shares of Common  Stock,  valued at the fair market value of the stock on
the date of exercise, as set forth below.

                     $________            of cash or check
                      ________            of Common Stock
                     $                    Total
                      ========          

      The name or names to be on the stock  certificate or certificates  and the
address and Social Security Number of such person(s) is as follows:

      Name_________________________________________

      Address______________________________________

      Social Security Number_______________________

                                          Very truly yours,



                                          ________________________