I know Tom. Have bought parts and usually look forward to running into him at the AAA fall meet at Hershey pa. Sent Tom an email on this but I think he may be away. I will try to call him. Yes, I know it's not a lot of extra displacement but it's a cool project anyway. If it does not work out, I can always just do a stock rod piston combo. As for the other motor, I am going to trace the entire bottom side of the head using pressure sensitive paper. Then transfer the tracing onto something more substantial, aluminum sheet, plexiglass, something, then bolt it to the block and see what's up. In the meantime, I have a couple of other unrebuilt heads that I might clean up, put on and clay up the dome like you suggested and see if its a casting issue or a machining issue. Still burns my butt that the pop ups hit.
