SIXTH AMENDMENT TO THE PRINCIPAL VARIABLE CONTRACTS FUND, INC. SUB-ADVISORY AGREEMENT Agreement executed as of the 10th day of December, 2001, to amend the Sub-Advisory Agreement executed as of July 1, 1997 (and including any subsequent amendments...

                             SIXTH AMENDMENT TO THE
                     PRINCIPAL VARIABLE CONTRACTS FUND, INC.
                             SUB-ADVISORY AGREEMENT

Agreement  executed  as of  the  10th  day  of  December,  2001,  to  amend  the
Sub-Advisory Agreement executed as of July 1, 1997 (and including any subsequent
amendments  thereafter) by and between Princor Management Corporation (now known
as Principal  Management  Corporation)  (hereinafter  called the  "Manager") and
Invista Capital Management, Inc., (now known as Invista Capital Management, LLC)
(hereinafter called "Invista").

WHEREAS, in the Sub-Advisory  Agreement,  Manager retained Invista to furnish it
with  portfolio  selection  and related  research  and  statistical  services in
connection with the investment advisory services which the Manager has agreed to
provide to the Principal Variable Contracts Fund, Inc.  (hereinafter  called the
"Fund"); and

WHEREAS, the Manager and Invista now wish to amend the Sub-Advisory Agreement;

NOW,  THEREFORE,  in  consideration  of  the  terms  and  conditions  set  forth
hereinafter,  the parties agree that  effective  January 1, 2002 Schedule A will
read as follows:

                                   SCHEDULE A
          Balanced Account (Equity Securities Only)            0.086%
          Blue Chip Account                                    0.070%
          Capital Value Account                                0.100%
          Growth Account                                       0.070%
          International Account                                0.110%
          International Emerging Markets Account               0.500%
          International SmallCap Account                       0.500%
          MidCap Account                                       0.100%
          SmallCap Account                                     0.250%
          LargeCap Stock Index Account                         0.015%
          Utilities Account                                    0.070%

                                      Principal Management Corporation

                                                /s/ Xxxxx X. Xxxxxx
                                      by:____________________________


                                      Invista Capital Management, LLC

                                               /s/ Xxxxxxx X. Xxxxx
                                      by:____________________________