Quote:
Originally Posted by JHeath
The rulebook allows a few more modifications in Modified Stock, compared to the FWD GT conversion. I don't have a rule book in front of me, but at least on the firewall, it can be replaced, I believe there is a spec as to where it should be mounted. Not sure about the floor.
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You are correct about the firewall, however, it is supposed to resemble the OEM firewall. The floor must be OEM.
FIREWALL
Firewall may be recontoured for distributor or magneto clearance
only, and must be properly refinished. The lower portion of the OEM
firewall may be replaced with steel of equal or greater thickness
than OEM. Chevy Cavaliers, Pontiac Grand Ams and Sunfires, and
Ford Escorts may have firewall replaced or relocated, provided the
measurement from the rear of the radiator core support to the
firewall is 34 inches maximum. For Chevy Cobalt the radiator core
support to the firewall is 33 inches maximum. For all others
vehicles, firewall must be in the original location.
A complete onepiece
steel firewall that resembles OEM must be installed, welded
in place, and sealed from the driver compartment. The firewall must
extend to and attach to the floor. The firewall and mid-plate must be
two separate pieces. All motor plates, mid-plates, etc. must be
separate from and may not be attached to the firewall. Additional
alterations prohibited. Engine must not touch firewall. Firewall
coverings prohibited. See General Regulations 7:4.
FLOOR
Stock mandatory. Floor-mounted clutch/brake pedals permitted.
Headers must fit under stock floor location. The stock framerails
from the firewall to the radiator support must retain stock
attachment configuration, stock location, and stock dimensions.
Frame may be notched for header clearance.