ok, so i have an 87 rx-7 turbo shell with a trans and all the wiring. nothing else. i found a 90 turbo that was rear ended with the whole front end in tact. i am wondering could i just swap everything under the hood of the 90 rx-7 to the 87 rx-7. would it all fit right? i dont see why not but i thought i would ask before buying the 90 rx-7.

 

search for S4 to S5 swap. There's tons of info on how it's done.

 

it will bolt in fine how ever the wiring is alot different between 87 and a 90, however if your good with wiring this isnt too crazy of a swap...