I want to wake up my S-10 a bit. I would like to get about 300 to 400 hp out of my 4.3L Vortec. I would like to know how big of a cam i could use without having to get new heads? It has a spider injector, can this handle the horse power if i upgrade the fuel delivery? What stage clutch should i get 2 or 3? Can i do this reasonably without going turbo? Should i go forged pistons?