Quick question on drive train interchange

[oldfarmboy64]

Just a quickie question before I get started down a long road. I have excess to some drive train parts for a project and was hoping to make sure these components will work together.
1) 1985 ½ ton super clean frame.
2) 1987 700-R4 transmission -I have the whole truck 1987 ½ ton 2wd .The body rotted away and engine (305) not running
3) 1990 350 engine from ½ ton 2wd runs great but rest of truck is shot. I was told the transmission was a auto 3 speed.
The plan is to pull the transmission (7004R) from the 87 and the engine and all the TBI wiring/computer sensors from the 1990 and swap them both over to the 85 frame. The frame will be shortened and have my 1958 Apache body mounted on it. I think it should all work together but want to double check. I will get almost as much from the 1987 and 1990 for scrap then what I have in them after I pull off the parts I need. I need to start pulling things apart before the family strings me up for starting my own little junk yard.