Will and 89 rs door work on a 90 rs
also what are the only differences in parts with these two cars i am looking to buy it and take the both of them and make 1 i know the steering wheel wont work but what about the rest of the stuff?
Thanks

 

body panels are the same aside from the ground FX. Pretty much everything goes to the third gen cars, even some parts from the fourth gen can go in the third gens.

 

Yeah, 3rd gens body parts will swap out with any other 3rd gen and some 4th gen can be put on as well. I have 4th gen camaro shocks on my 87 for example