Stepped piston hitting head, options and advice needed.

OK now that i get it:rolleyes:. looks like he will be fine at 9.8: with the positive step removed, rhs head and .039 head gasket.
Or keep the pop up/dome, run the stock 340/360 heads and and with the same gasket get 9.08.

This is assuming that your piston is at 0 deck(not including the the pop up part of the piston.)
With that info i change my tune. I would remove the piston, have the dome remove by someone that has a mill, reinstall and us the rhs heads.
installing your 340/360 heads you would only have check valve to piston clearance and your on you way.
Sorry about all that above. Just didn't think there was any way that dish was going to be deep enough to knock that much compression off of it............but i was wrong:BangHead::D