How stupid is this...swapping a GM part that the truck came with back onto it... /forums/images/graemlins/grin.gif I am gonna be putting a q-jet on my truck to replace the Carter POS that is on there now. The manifold I have looks to be a square bore (edelbrock performer rpm). Will an adapter work ok to fit the q-jet on? I really do not want to mess with manifold replacement at this point. Also the q-jet has like 6+ vacuum ports on it, and currently I only have 3 vacuum lines hooked up on the Carter POS. Is there a good diagram somewhere (or does someone have one?) that shows what the different vacuum ports on the q-jet are for?