i am a welder, i have a set of itbs, i have a spare manifold, i have the knowlege to build it, my car is running on neptune and my tuner said he could do it. that is why im not worried about the gains. who can say the have ITS on their f20? ive never seen it so ifigured since i have the stuff i would give it a try. i plan to go boost in near future and figured i would leave it on there. the point of this thread was to see if anyone had any pointers and suggestions.