I am looking at a 1988 silverado z71 4x4. I can pick it up at a real good price. All it needs is a transmission. I am not really up on 4x4s so I have no clue if I buy the truck what I am getting myself into. Changing the transmission is not a problem doing myself. can I use a 2 wheel drive truck transmission or does it have to be a 4x4 transmission. I know they look different on the tail and I think the 4x4 bolts to the transfer case. Wondering if I can remove the tail shaft from a regular transmission and swap some parts over if it will work?