I am actually in the middle of doing a N/A to Turbo. I guess a few things are:
Try to use the same year engine, 88 N/a, use a 88turbo, Only because I know 89.5+’s use diff connectors. I believe 87, 88 are the same, correct me if I’m wrong guys.
So far I have swapped over the engine, pretty much got her in the mounts on my first try, lucky me. It’s a fun job
J. Here is a great link for some steps and what you will need.
http://4cefed.com/conversion.html
PEace.......