I recently purchased and disassembled a 73 Nova Custom. It had a 350cid, with a th350. The trans out of the car has a short tail shaft. I also recently purchased a performance th350 which was previously in a 4x4, it has a long tailshaft. I am confused as I thought the short shaft would have been in the 4x4 due to transfer case length and the long shafted trans should have come out of a 2wd car. Can someone help get me straight on this? Thank you.