I'm shooting for 9.6:1 on 89 octane in a 350. I've got Vortec heads that I've deburred a little, KB hyper pistons 4.020" with a 1.561" compression hight and 12cc dish. I will be running as close to stock deck height as possible and use a .015" head gasket to give me a squish of .039". The cam will be a Comp Xtreme Energy XE256H. I plan to run 91 octane until I get a knock sensor, after which, I will experiment with lower grades of fuel. HP and torque guestimates are in the 320-350hp range with 410-430 ft lbs of torque. Gas milage, 15 mpg+ I hope.