Ok so I traded for a gt40 motor ive been wanting. It has 38,000 on rebuild, my question is what all can be used from the motor? im going to attemp to attack the heads myself but plan on getting it bored .30, not sure on what kinda pistons to go with. Im planning on getting trick flow stage 1 cam, and soon as i can afford it a on3 turbo. But anyway what all stays and what all has to go, its complete from oil pan to cpu, and wiring harness.