You're embarrassing me now
. yes I meant the top ring land. But the squish band would still need clearance to the head, of course not on a hemi like the A10 but I've recently rebuilt a Perkins diesel and its flat piston, flat head, perhaps that got into to my mind
. Call me old fashioned but I'm not comfortable with the top land going into the gasket thickness (which is perhaps what I should have said in the first place).