In keeping with the "cats before the turbo" that DemonSVT was talking about. I know that I, for one, would not be comfortable having any kind of cat accidentally throwing pieces of itself through the turbo. Now that I think about it, the first company that was going to make the turbo kit for us, we had planned it that way. In hind sight, I'm sort of glad it didn't go through.
In addition to what Jim was saying about CARB approval, and the Vortech kit. When did an open element air filter become CARB approved??? The Vortech kit comes with one. A crappy one at that.
-Chris
