[Zacm1]

I have 89 Chevy 4x4 and the tranny started leaking form the torque convertor area. I have to pull the tranny and was wondering if I could take a good 2wd 700r4 and convert it to 4wd by exchanging the rear tail shaft using my transfer case. I have a buddy that has a 700r4 with a mild shift kit and torque convertor sitting in a barn and if I am going to have to pull the tranny, I would like to put this in its place. Can anyone tell me if it is possible to just swap out the tail shafts from 2wd to 4wd on the 700r4. Thanks in advance