How much power is it possible to make with this head??? I don't have the flow numbers on me, but they have been ported. I want to spray my car deep into the 9's. It's currently runnin low 10's.... I'm going to be building a 434 sbc soon, and I'm most likely going to go with some bigger heads. I want the most power I can get out of this motor. What head would you recommend????