Not sure if you're being sarcastic, or just don't know about engines, but for those readers who really don't know:
Nope, being serious. The indentation look pretty deep in the pics, but it's hard to tell how deep they really are. I realize there is expansion in the pistons, and they rock pretty damn good in the bores, but the clearance must of been very close to start with.
Mick, from what you can tell, do you know what the piston protrusion is now, and how thick the head gaskets were while clamped.