use the gsr engine harness and swap out sensor plugs if need be

there is no need to change everything

 

I don't know much about mis-swapping engine harnesses on OBD2, but I had the severe displeasure of standing in 30 deg F weather + windchill for three hours to repin Rob Deal's VX engine harness to suit the DX car everything was going in. Based on that experience...If you have one or two extra pins on one plug that is completely different, you probably have a ton of ---- swapped around in the others.

Compare wiring harness colors to make sure if my guess is right or wrong.

 

Thats an awesome swap, good luck on that one