I had thought of making it 3pc. as Zip had mentioned before, sounds like too much trouble as my shaft rockers/pushrods etc. probably wont fit. So i think i'll fix the one's i have, do you guy's think there'd be a problem if the heads are a little soft. I have'nt checked them yet, just trying think how the insert dropped out and there is a groove around them from the wire head gasket.