I agree with Joe, I did a resonator delete and it sounded very raspy and more like a sportbike than I liked. Just for info sake, I recommend staying away from headers unless you plan to run over 3k to 3,500 rpm ALOT or race tracks with it. The install is a pain on the pass side and you lose alot of lower rpm oomph. IMO I think the hfc's sound much better than the "test pipes" or free flows that you have, I took mine off and installed some Kinetix hfc and am very pleased with them. Lowered the high pitch sound to a deeper tone. Then, of course, I jacked that sound up by installing a cheap azz true dual exhaust system.

It sounds great cruising nice and slow then all heck breaks loose when I floor it, a little tinny and high pitched. then again, it is a 6 cyl.