EXHIBIT J
 
The Board of Directors
 
June 17, 1996
 
CONFIDENTIAL
 
Brenco, Incorporated
One Park West Circle
Midlothian, VA 23113
 
Members of the Board:
 
    You  have requested our opinion as to  the fairness, from a finan-cial point
of view, to the  holders of the  outstanding shares of  Common Stock, par  value
$1.00  per share (the "Shares"), of  Brenco, Incorporated (the "Company") of the
cash consideration of $16.125 per Share to be received by such holders  pursuant
to the Acquisition Agreement dated as of June 15, 1996, among Varlen Corporation
(the "Acquiror"), BAS, Inc. and the Company (the "Agreement").
 
    Wheat,  First Securities, Inc. ("Wheat"), as  part of its investment banking
business, is  regularly  engaged  in  the  valuation  of  businesses  and  their
securities   in   connection   with   mergers   and   acquisitions,   negotiated
underwritings, competitive  biddings,  secondary  distributions  of  listed  and
unlisted securities, private placements and valuations for estate, corporate and
other  purposes. Wheat has provided investment  banking services for the Company
in the past for  which it has received  customary compensation. In the  ordinary
course  of our business  as a broker-dealer, we  may, from time  to time, have a
long or short position  in, and buy  or sell, debt or  equity securities of  the
Company  or  the  Acquiror  for our  own  account  or for  the  accounts  of our
customers. Wheat will receive a fee from the Company for rendering this opinion.
 
    In arriving at our opinion, we have, among other things:
 
    (1) reviewed the financial and other information contained in the  Company's
       Annual  Reports to Shareholders  and Annual Reports on  Form 10-K for the
       fiscal years ended December 31, 1995, December 31, 1994 and December  31,
       1993,  and certain interim reports  to Shareholders and Quarterly Reports
       on Form 10-Q;
 
    (2) conducted discussions with members  of senior management of the  Company
       concerning the Companys business and prospects;
 
    (3)   reviewed  certain  publicly  available  information  with  respect  to
       historical market prices  and trading activity  for the Company's  Common
       Stock and for certain publicly traded companies which we deemed relevant;
 
    (4)  compared the results of operations of the Company with those of certain
       publicly traded companies which we deemed relevant;
 
    (5) compared  the  proposed financial  terms  of the  transaction  with  the
       financial terms of certain other mergers and acquisitions which we deemed
       to be relevant;

    (6)  performed a  discounted cash  flow analysis  of the  Company based upon
       estimates of projected financial  performance prepared by the  management
       of the Company;
 
    (7)  reviewed the Agreement (including the  Exhibits thereto) dated June 15,
       1996; and
 
    (8) reviewed such other  financial studies and  analyses and performed  such
       other  investigations  and took  into account  such  other matters  as we
       deemed necessary.
 
    In rendering our opinion, we have  assumed and relied upon the accuracy  and
completeness  of all information  supplied or otherwise made  available to us by
the Acquiror and  the Company, and  we have not  assumed any responsibility  for
independent  verification of  such information  or any  independent valuation or
appraisal of any of the assets of  the Acquiror and the Company. We have  relied
upon the management of the Acquiror and the Company as to the reasonableness and
achievability  of their financial and operational forecasts and projections, and
the assumptions and  bases therefor, provided  to us, and  we have assumed  that
such  forecasts and projections  reflect the best  currently available estimates
and judgments of such management and that such forecasts and projections will be
realized in the  amounts and  in the time  periods currently  estimated by  such
management.  Our opinion  is necessarily based  upon market,  economic and other
conditions as  they exist  and  can be  evaluated on  the  date hereof  and  the
information  made available to us through the  date hereof. Our opinion does not
address the relative merits of the transaction contemplated by the Agreement  as
compared  to  any  alternative  business strategies  that  might  exist  for the
Company, nor does  it address the  effect of any  other business combination  in
which the Company might engage.
 
    Our  advisory services and the opinion  expressed herein are provided solely
for the use of  the Company's Board of  Directors in evaluating the  transaction
contemplated  by the Agreement and are not on behalf of, and are not intended to
confer rights or remedies upon the Acquiror, any stockholder of the Acquiror  or
the  Company, or any  person other than  the Company's Board  of Directors. This
opinion may not be summarized, excerpted from or otherwise publicly referred  to
without our prior written consent.
 
    On the basis of, and subject to the foregoing, we are of the opinion that as
of the date hereof the cash consideration of $16.125 per Share to be received by
the  holders of  the Shares  is fair, from  a financial  point of  view, to such
holders.
 
                                          Very truly yours,
 
                                          WHEAT, FIRST SECURITIES, INC.
                                          By: __________________________________
                                              Managing Director