KB237 pistons for sure. You won't have quench, but without milling the block at all and with the .020" steel shim head gaskets you should be at around 9.5 compression. With the right cam and premium fuel it will do okay. Actually I would deck the block to bring the pistons to zero deck while you're in there, that way if you ever choose to go to aftermarket closed chamber aluminum heads in the future, you'll be setup perfect for them.

You can run the big summit cam if you're needing to pinch an extra 80 bucks from the budget. I would be more likely to look at the comp xe275hl or lunati voodoo 60304 myself.

But both of the above suggestions are assuming you're going for more of a street machine than a tow/utility/4x4 rig.