Bill Hanlon Thanks for your reply,is there an article on Deve's build ?? I have used several different in-line and v-6 HEI's to do this conversion and they are all running. The trouble with the HEI's that have to be turned down that I see is they get pretty thin,can't recall if I have any of those running out there. Seems like once you get it fired off it'll run a long time,mine are all just used parts. Maybe Deve will chhime in on mopar parts.