[Mike Simard]

I'm surprised they even have dome pistons stocked. Even a true flat top would yeild some unholy compression like 13:1 with 60cc heads and a .041 gasket unless the piston is down in the bore. What comp. ratio are you after?
I'm a believer in having custom pistons made if necesarry and waiting however long it takes. It's nice to know that you have the comp. you wanted and valve clearance.