and greg already noted that tt heads flow better than the na heads. Again, machine work for milling heads is cheap. Keep it simple.
KongZTT GT28RS MD "I was very impressed with his mother mounts" Aliaz "I always shave down the boss when I do headwork" 240Z FeO2 "It's the way this forums weeds out morons, whiners and the pathetically light weight." Red Hawk (CO) "idk what a short throw sister is, but she sounds nice :)"