I currently have S-Line Exhaust, Headers and stock cats on my car. It currently sounds amazing, but always looking for better. I have a set of resonated cats that I'm contemplating on putting on. For those of you that also have cat deletes with your S-Line/Header combo. Was it worth it? I want loud, but I want the right kind of loud.
I replaced my cats with glass packed resonated pipes on my 360. It sounded bad and everyone told me so. It was louder but low pitch. Stainless wool packed would have been better. I went to 200 cell sports cats. Much better, everyone liked it.