Stop in for a cup of coffee

krazykuda said
Like I said, the head gasket is thicker than the pistons stick up above the block...

I would be more worried about piston to valve clearance than hitting the combustion chamber with the piston...

That is what I'm worried about, valves. Wondered if valve position in the modified J head would put the valve too close to a high compression block piston. Sounds like it should be ok, I need the open chamber I think.