Chuck Norris is going to tune my mullet mobile in a few weeks. That way when I lose, I'll still lose, but at least my car will be blessed by the hand of god.
as far as the cutout, I had heads/cam with a cutout and I didn't even notice a difference in power when it was opened or closed.... "By the seat of your pants" isn't a good way to judge HP gains... sound <> always = hp gains