I think I'll try the diy cai setup. The car already has a k&n filter in it with the noise supressor removed. I like hooker comps very well. i have them on both of my Che***s. The main problem I would see with them on the Mustang is ground clearance. The car is a Saleen clone with the full body kit and suspension under it. It was that way when I bought it. The car tends to drag on a lot of dips and speed bumps. I may take a look at them anyway. Ground clearance is probably why most everyone prefers the shorties, although long tube make more power.