Hello I know this is probably a really dumb question, but im new to rotarys and i was wondering will a 13bt s5 bolt right into a 1990 fc that came with the n/a motor? Im not sure if they have the same mounts or anything or if ill need anything or if i can just drop it in with the 13b-t tranny and everything. with the 13b-t harness and everything.

 

Quick answer:

https://www.rx7club.com/2nd-generati...7/#post5131155

 

You can swap the TII engine + ECU, 13BT transmission, TII drive train, and use the N/A wiring harness with slight modification. As long as it is within the same series. (Example: S5 to S5, S4 to S4.)