it depends on which engine harness you are planning on using.
if you're using the '92 harness, then you either need to change the plugs on the alt, distributor and injectors or swap them for OBD1 units.
I used the OBD2 engine harness that came with my swap, switched around a few wires and pluged it into my '92 chassis harness at the shock towers and everything works perfectly.