I was hoping you were closer. I'm 125 miles southwest of Memphis. If you feel so inclined you could bring your block, pistons, head gasket and head bolts/studs down here and we could find out where you are at. I have a Sunnen CV 616, Sunnen dial bore gage in tenths, Sunnen setting fixture, Mitutoyo profilometer and a torque plate. We could measure where you are now, then hone it until it's clean. Then we could decide if you need pistons or not. Hopefully not. Might have .001" more piston clearance but so what? The profilometer will tell you the surface finish is good. Then I have some Edelbrock heads here that we could put on there to check the intake to cylinder wall clearance. Your fix might all be very easy. And may not really cost you anything.