intake manifold

i want to upgrade my intake manifold. i'm thinking of the trickflow street heat intake, would the 70 mm throttle body be to big. i am doing a mass air swap now and after the summer heads and a cam. would there be a better choice that would enhance a stock motor?

I've heard some really good things about the Holley EFI intake. It would be cheaper for you to buy a H/C/I kit from Trick Flow or Holley. Thats what I would suggest and also what I would do if I had a stock 5.0 car.