I found a NP231J from a 1994 ZJ that had a 4.0. I just want to make sure there is nothing tricky about swapping this into my 1997 ZJ with 5.2L. It has an ISY like my ZJ, and I am not planning on doing an SYE for a while. I just want to get this in for the summer, and next year I will do a complete rebuild with SYE and new rear drive shaft.
I was reading that there is a collar that I need to hammer out, but other than that it should bolt right up and run like a champ.
So for now:
1) Hammer out collar on input shaft
2) Replace front and rear seals on NP231
3) Replace rear seal on transmission.
4) Swap out transfer cases.
5) Swap red plug for black plug behind module in dash.
Anything else that I need to/should do?