Wait till you see what I find....

I agree with TB. Make sure you verify the exhaust valves ain't bent.

I'd clean off a piston top, get some clay and slip a head back on with the gasket and see if you have any clearance. You could be real close and as said above a bit thicker gasket and rolling the cam ahead 4 degrees could save you.

As I've said before...real education costs beau coup dollars. The learning curve for this stuff is STEEEEEEEEEEP.