Could you run a smaller sc pulley if you bored out your motor. I was think that creating a biggery cylinder opening would create less back preasure, creating less back preasure would put less work on the sc, therefore allowing it to run cooler, which might let you run a smaller pulley. what do you all think

Not enough to make any difference at all.

Spend the over bore and piston and rebuild money on an intercooler.

Yeah man mine is .20 over and it equates to about a 233. Really nothing at all.