I'm trying to help a friend out with his LS conversion in to a 1950 Ford truck. The engine, harness and PCM are from a 2004 Chevy truck. I have a 2004 GTO. I believe they are both P59 computers. Would I be able to replace the GTO computer with the truck computer so I could read and write? I need to remove VATS and all the emission codes so that he can fire up the truck when he's ready. I don't have a bench harness and using my car as one would help him so that he would not have to wait on me to go over to his shop when he is ready to start the engine.