I have the Densecharger on my Roush & had one on my Dads o2 GT that I just took off because he just got a Mach 1. IMHO they make the best cold air kit.
For about the same price you could get a straight shot or densecharger. I had both the mac cold air and the straight shot and the straight shot seems to make more power and looks better. If you must have one in the fenderwell get a densecharger, its probably the best fenderwell cai there is.