to do a gsr swap what all do i need for my obd1 93 dx coupe with ex interior and sohc vtec motor wires and a p28 ecu.I have the gsr motor.

 

Full swap.
From engine to shock tower, use GSR harness. From shock tower to ecu, use dx harness. Use obd1 ecu. To run a p28 on a GSR, you'll need to get it chipped in order to run the secondary butterflies in the IM. Do a search regarding the p28 on GSR and you'll find a more in depth write up. Hope this helps