I Agree they do use a lot better turbo. and I'll assume they use a better BOV and wastegate than the On3 kit, since most of the pictures on their site have broken links. But even from the looks of it their bracketry is the same (Turbo support and P/S relocate bracket). Had I known about this kit earlier I would have gotten it and saved some cash on the fuel system upgrade. If they get their piping from the same source then it is still likely that it would have to be modified.
Now if this company (S&H) would make one for the 4.0/6, I'd be all over it. I am SERIOUSLY considering an On3 kit for my wife's 06 Vert-Auto. Nothing too crazy but a nice 300+ RW would be sweet as hell.