Can I use Tii pistons ( baby grand piano style dome, going with the axis of pin ) with this head. I realize that machining is required. Should I machine head, pistons or bit of both? Will these piston with their funny shape cause any air flow problems. After grinding I should have 9.0:1 compession. I'm using 2L crank, grinding cam, stock exhaust. Just want to be able to pass on "Boozer Bill's hill. Really appreciate the help. thanks.