Pontiac Gt to Gtp engine swap

You need everything from a GTP and a lot of patience and a good deal of money. You have to change engine, transmission, ECU and all related sensors and wiring, the entire fuel system including the two stage fuel pump, probably the front axles...that's all I can think of but there's probably a few other odds and ends. Or maybe I misunderstood the question. My other advice as always is if you want a GTP then just buy one. There's quite a few good ones around still, reasonably priced and ready to drive. So the other answer to your question is to sell the GT and buy a GTP. Happy motoring.