Hi Mark, Can you run a header? If so great, if not the '05-'07 st mani/cat if the best. Main thing I could think of is hooking up the imtv for the 23 d/r intake, which I'd run vs the 20's single runner i/m.
It was designed to be more functional than anything else, so it looks great from a distance, but it won't win you any points at a car show if you know what I mean.