Exhibit 8.1

                               January 29, 1999


The Addressees Listed
   on Annex A

            Re:   NovaStar Mortgage Funding Trust, Series 1999-1

Ladies and Gentlemen:

            We have acted as special tax counsel to NovaStar Mortgage, Inc. as
to certain matters in connection with the issuance and delivery of certain
asset-backed bonds denominated NovaStar Home Equity Loan Asset-Backed Bonds,
Series 1999-1 Class A Bonds, Class B Bonds and Class IO Bonds (collectively, the
"Bonds") pursuant to an indenture dated as of January 1, 1999 among NovaStar
Mortgage Funding Trust, Series 1999-1, a Delaware business trust, as issuer (the
"Issuer"), First Union National Bank, a national banking association, as bond
administrator (the "Bond Administrator") and The Chase Manhattan Bank, as
indenture trustee (the "Indenture Trustee"), and the Certificates pursuant to an
amended and restated trust agreement (which amends the trust agreement dated [ ]
between Residential Asset Funding Corporation, as depositor (the "Depositor")
and Wilmington Trust Company, a Delaware banking corporation, as owner trustee
(the "Owner Trustee")) dated as of January 1, 1999 (as amended from time to
time, the "Trust Agreement"), among NovaStar Mortgage Funding Corporation II as
the transferor (the "Transferor"), the Depositor and the Owner Trustee.

            As special tax counsel, we have examined such documents as we have
deemed appropriate for the purposes of rendering the opinions set forth below
including the following: (a) a Prospectus dated November 10, 1998 and a
Prospectus Supplement dated January 27, 1999 (together the "Prospectus") with
respect to the Class A Bonds, (b) an executed copy of the Indenture and the
exhibits attached thereto, (c) an executed copy of the Trust Agreement and the
exhibits attached thereto, and (d) other documents and matters of fact and law
as we deem necessary for the purposes of the opinions expressed below. Terms
capitalized herein and not otherwise defined herein shall have their respective
meanings as set forth in the Indenture.

            In our examination we have assumed the genuineness of all
signatures, the authenticity of all documents submitted to us as originals, the
conformity to original documents of all documents submitted to us as certified
or photostatic copies and the authenticity of the originals of such latter
documents.



To the Parties Listed on
  the Attached Annex A;
January 29, 1999;
Page 2

            Our analysis is based on the provisions of the Internal Revenue Code
of 1986, as amended, and the Treasury Regulations promulgated thereunder as in
effect on the date hereof and on existing judicial and administrative
interpretations thereof. These authorities are subject to change and to
differing interpretations, which could apply retroactively. The opinion of the
special tax counsel is not binding on the courts or the Internal Revenue Service
(the "IRS").

            Based on the foregoing, and such investigations as we have deemed
appropriate, we are of the opinion that for federal income tax purposes:

1.    Assuming that (a) the Issuer created under the Trust  Agreement  elects,
      as it has  covenanted to do in the Trust  Agreement,  to be treated as a
      "real estate mortgage  investment  conduit"  ("REMIC"),  as such term is
      defined in the Internal  Revenue  Code of 1986,  as amended (the "Code")
      and (b) the  parties to the Trust  Agreement  and the  Indenture  comply
      with the terms thereof,  the Issuer will be treated as a REMIC.  Subject
      to the  above,  the  Bonds  issued  pursuant  to the  Indenture  will be
      treated as "regular  interests" in the REMIC and the Certificates issued
      pursuant to the Trust  Agreement  will be treated as the sole  "residual
      interest" in the REMIC.

2.    The statements under the caption "FEDERAL INCOME TAX CONSEQUENCES" in the
      Prospectus Supplement are accurate and complete in all material respects.

3.    As a  consequence  of the  qualification  of the Issuer as a REMIC,  the
      Bonds will be treated as "regular . . .  interest(s)  in a REMIC"  under
      Section  7701(a)(19)(C)  of the  Code and  "real  estate  assets"  under
      Section  856(c) of the Code in the same  proportion  that the  assets of
      the  Issuer  consist  of  qualifying  assets  under  such  sections.  In
      addition,  as a  consequence  of the  qualification  of the  Issuer as a
      REMIC,   interest  on  the  Bonds  will  be  treated  as   "interest  on
      obligations  secured by mortgages on real property" under Section 856(c)
      of the Code to the extent  that the Bonds are  treated  as "real  estate
      assets" under Section 856(c) of the Code.

            Our opinions contained herein are rendered only as of the date
hereof, and we undertake no obligation to update this letter or the opinions
contained herein after the date hereof.

                                       2


To the Parties Listed on
  the Attached Annex A;
January 29, 1999;
Page 3

            We express no opinion on any matter not discussed in this letter.
This opinion is rendered as of the Closing Date, for the sole benefit of each
addressee, and no other person or entity is entitled to rely hereon without our
prior written consent. Copies of this opinion letter may not be furnished to any
other person or entity, nor may any portion of this opinion letter be quoted,
circulated or referred to in any other document, without our prior written
consent.



                                Very truly yours,
                                /s/ Dewey Ballantine LLP
                                       3

                                   ANNEX A




                                           
Wheat First Securities, Inc.                  Financial Security Assurance, Inc.
acting through                                350 Park Avenue
First Union Capital Markets, a division of    New York, New York  10022
Wheat First Securities, Inc.
301 South College Street, TW-06
Charlotte, North Carolina  28288-0610

Standard & Poor's Ratings Services            The Chase Manhattan Bank
25 Broadway                                   450 West 33rd St.
New York, New York  10004                     15th Floor
                                              New York, New York 10001

NovaStar Financial Inc.                       Moody's Investors Service, Inc.
1901 West 47th Place, Suite 105               99 Church Street
Westwood, Kansas  66205                       New York, New York  10007

NovaStar Capital, Inc.                        NovaStar Mortgage Funding Corporation II
1901 West 47th Place, Suite 105               1901 West 47th Place, Suite 105
Westwood, Kansas  66205                       Westwood, Kansas  66205

NovaStar Mortgage Inc.                        NovaStar Mortgage Funding Trust 1999-1
1901 West 47th Place, Suite 105               c/o Wilmington Trust Company
Westwood, Kansas  66205                       Rodney Square North
                                              1100 North Market Street
                                              Wilmington, Delaware 19890-0001
Wilmington Trust Company
Rodney Square North
1100 North Market Street
Wilmington, Delaware 19890-0001