John, didn't mean to bad mouth anyones heads, its great that you can start with a smaller head and make it what you want, its just we ran into this type of problem on our Pontiacs a few years back when the aftermarket aluminum heads came out. They started out way to big and really made a lot of stock type engines run really bad. The second optional came with smaller chambers and ports which worked much better for the average street racer type car. Now there are three or four different manufactorers of heads for the Pontiac, so the quality and performance has gone up. Joe
