what pistons to run with set up??a bit of help

It's just a fallacy to think you can get away with even a blueprinted 9.5 on pump gas without some kinda quench. You caint do it. Not with iron heads. You wanna set up an expensive quench motor where you have to individually massage each cylinder's piston and combustion chamber? Great. Knock yourself out. But the average joe motor ain't gonna run pump gas with 9.5. I have a friend who has a SHO NUFF 71 LT-1 Camaro. engine's never been into. Has like 65K original miles. It's rated at 9.2:1 just like it left GM. Even has a pretty stout factory solid cam. Without a spike of at least 5 gallons of 114 Cam2 racing fuel it rattles on today's super. It has a sticker on the sun visor that says "PREMIUM FUEL ONLY" and that was back in 1971, not today with the crap gas we have. Premium fuel in 1971 was 101 octane. 105 in some places. My friend's 86 D150 he has KB167s in will rattle when it's hot if he lugs it in too high a gear at to low a speed with his 4 speed OD. Build your motor at 9.0:1 if you wanna run on pump gas with no quench without a ridiculously sized camshaft.