what kind of sound system do you have in the car? I was thinking of making a CD of cool exhaust sounds to listen to while driving my car that way I can have the sound when I want, but not attract too much attention from the cops and be able to turn it off when I want.
Since it's only about sound and looks I'd get the cheapest one that fits those two for your personal taste. Look up the ones you like on youtube to hear sound samples.
I'm gonna do the exact opposite though. DP and stock exhaust.