drag racing are we ? well for one the c4 itself, bellhousing,torque converter , kickdown cable i dunno about your transmission crossmember, driveshaft might need modification. No idea how your gonna get it to connect to your stock shifter designed for O/D. Not sure on the speedometer cable matching. Why are you looking for a C4 anyway ? a properly prepared AOD will at least have O/D and not require any modifications to install. For the price of the swap alone you could probably get a AOD rebuilt with some performance internals.