Im buying a HRC Stage 2 and some JE Pistons, Crower rods, and some rings. That is about it for that. Im going to buy a direct port nitrous kit from NX and try running 125 shot (maybe 100). What should I change before I squeeze. Cams? Springs? Valves? What well last and what wont. Is it going to be one of those trial by error or what? I need help before I beat my car into the ground.