Join Date: Aug 1998
Location: Winnetka (aka L.A.), Ca.
I'm not sure what year your car is, but in the early G.M.'s, the pedal pivoted at it's base off the floorboard. It pushed on the "linkage" that went through the firewall (and to the carburator).
What may be the best way to go would be to look through the street rod magazines for a "hanging" type pedal and throttle cable. You may want to look up "Lokar" (that may be spelled wrong) and get one of their catalogs.
Technical Reference Section