Hey I was going to buy one of Professional Products throttle body and plenum kits with the polished finish. Does any one have one of these kits on your car? How good do they look? Also 70 or 75 mm. I do plan on using nitrous soon. I will be getting the aluminum intake manifold for the nitrous. Any opinions are greatly apprciated!!! BY the way this is a great site for 4.6s.