Hey stock600 I was wondering on what all you have done to your 81 chevy. I had seen you out at the DHRA there in baytown back in october. Nice truck. Becuase i am working on a 72 chevy super chyanne custom. 1/2 ton. and i am wanting to throw a 12valve into it, how ever i dont know what all to do or what.... I need help ... lol