I put a '89 5.0 in a '93 coupe x 4 banger. I bought a harness out of an '89 gt to match the motor, now i am wondering if i should have bought a '93 gt harness? It's just the computer harness and I believe i will need two other pcs. ,oxygen sensor harness and mass air harness to have all the plugs covered. Can someone help with these ?s please? thanks