Beater ,thanks in advance for the measurements of the 250 and 307 pistons. Can you, if possible, also post what the compression height of the pistons from the box or sheet that came with them? Do you have more than 1 set for sale? I won't know if I really have to overbore until I get the engine apart. I understand that they might be sold before then and am fine with that. Str8shooter, I think that they would be worth it because the 307 pistons get you closer to 0 deck that you need for good Quench maybe not have to deck the block at all. Also there has got to be SOME increase in compression by getting rid of the dish in the 250 piston that is big enough to fill with water and scuba dive in. Jay 6155
