What is the cars current performance, and where do you want it to be? I think the 0.507"/0.510" lift cam is going to limit the heads flow. I think if you clean-up the stealth ports and bowl area a bit and have a multi-angle valve job done it will help the port flow better in the lower lift areas below 0.500" lift, and should not cost too much if you can do some hand porting? I would gasket match the ports and intake manifold. Not sure what manifold your using? If the performance is ok, and just looking for a bit more, I don't see the value of spending thousands of dollars to change up the combination?
