69MOPE said 1) Car model/year wheelbase (if known)(108" or 111") 2) Engine (small block/big block) 3) Trans (904/3 speed OR 727/4 speed) 4) Rear (7 1/4, 8 1/4, 8 3/4, 9 1/4 or Dana 60) 5) Your FACTORY driveshaft length Click to expand...