Thanks Mat,
I'm not trying to do anything too crazy, just looking for some easy bolt-on upgrades. The smaller chamber ( (69cc to 60cc) and larger valves ( from 1.78/1.45, to 1.84/1.54) I thought would be an upgrade, but if it is a more complicated of a fitment, I may scrap that Idea and simply clean up the heads already on the truck. If I can confirm I can find the parts to make these heads work, fine, but if finding the parts to make this work is like finding a golden-egg... I'm not in the hole a bunch already....yet,