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

"careful chamber prep". Exactly. It ain't cheap, unless you can do it yourself. BUT ONE MORE TIME...and see if yall can grasp it. I am talking about completely unmodified chambers, pistons and everything else. I am talking about what most build on a BUDGET. WIthout a big camshaft that totally WASTES cylinder pressure, you cannot do it. Without "careful chamber prep" AND careful piston prep, you cannot do it. I don't give a FRIG what you've read, been told or otherwise. Here's the bottom line. If you have made an engine run on pump gas above 9.5 you have either one of two things:1) a stupid overcammed inefficient pile of iron, or 2) you have done all that careful prepping people here have talked about. PERIOD.