I have a 94 civic EX Automatic with a D16 Vtec. I recently got a free 98 Integra 5-spd with a B18B1 Non vtec. The whole car. I wanna put the B18B1 and manual tranny in my civic. On the Wiring. Should I swap over the whole OBD2 harness or can i use the obd1 harness already in the car?? What would i need for it to be OBD1? I just wanna keep it simple.