Got a buddy that has the stock gto cam out of his car and said I could have it if it would be worth the trouble. My truck is a 00 GMC 4x4 5.3 auto, only mods are true duals with hooker aero chamber mufflers. Mainly use the truck as a DD but will be pulling a trailer with a 86 GMC 4x4 on it every once in a while.