[ND1980LS]

Won't the '90 fit if you get the tranny also ??....and it'll have a couple of sensors that are different than the '89 ! Take a look at the threads to make sure you can't swap it !

 

[ND1980LS]

The one I'm going to start with is the 87 coupe. So, I'm pretty sure that the 90 won't butt up to the tranny. If I can put the tranny and motor from a 90 in my 87, then, no problem.

I think if you keep it ALL '90...it'll work.....maybe some sensor wiring issues.... but that's all.