Well, if you want sound as your first mod, sure. But I would save your $'s and hold off for LT's/CAI, you'll get more out of them. I went exhaust first, because I didn't think I was going to do anything else to my car, but I bought a daily driver, and I am expecting a cam/LT package this Friday! Damn I can't wait!
2005 IBM M6
Flowmaster Super 40's
Chris White Guage Changes
HPE Cam Package(S-Cam, AR LT's,Lingenfelter CAI,UD Pulley, X-Pipe, Ported Factory Intake)
BMR Drag Bags