I have a 69' Firebird with a 400ci motor (not the original however the VIN indicates the car was born with a 400ci motor) and automatic transmission. The current 400ci motor came from a 74' Pontiac Bonneville, how an I tell if the transmission is the original transmission or has been replaced? Can someone tell me where I can find the ID tag on the Transmission?
It's a floor shift and I need to locate the correct automatic shift linkage/shifter once I confirm the transmission ID. thanks,