School me on 700r4s what fits a 90 suburban.

[dragn91]

I'm buying a pretty clean 90 4x4 1500 suburban (squarebody) I originally was just going to pick it up for the mint set of doors it has on it to put onto my crew cab but it looks like to nice of a truck to scrap after I Rob the doors. The doors on my crew are decent enough that I can still use them on the suburban so I'm still going to swap them but I may throw a trans in the suburban anyway and eaither give it to my grandfather or keep it until I can track down a reasonably priced crew cab k30 to buy. I've probally driven 1500 miles the last couple weeks trying to hunt one down. I'm getting the suburban for 400 bucks it's a 350 tbi I'm assuming 700r4 trans that is bad. It's a half ton 4x4 and very much stock and in good shape for this area. My question is what year trucks trans will work in this suburban? My buddy has a blown up early to mid 90s 1500 4x4 I'm sure I Gould grab the tranny out of for free. How do I tell if this is the 700r4 or the computer controlled 4l60e? If it's a 700 will my transfer case still fit it or should I grab that as well? Thanks for the help.