Thanks everyone. I am going to run the GT-40 for now and see how it does. I personally think it will be fine with the heads beacause they are designed to make good mid-range power and that is where the GT-40 is at its best. When I do a rebuild, I plan on having T-Moss port the lower anyway. I have seen alot of cars with a GT-40 intake running in the 10's, so even though they are old technology, they can still get the job done.