[JL8Jeff]

First off, don't compare the sound from any other vehicle if it's not the same engine so LT1 won't be close to LS1 and Ford will be completely different as well. Pretty much every exhaust system sounds pretty good compared to stock. Do you want loud? Do you want loud at idle, quiet while cruising? Do you want stainless steel? I had the GMMG when I had stock manifolds and it was not bad. With headers it gets loud. SLP Loudmouth I gets too loud and sounds even worse with headers and no cats. Loudmouth II isn't as bad because it has a muffler vs resonator. I had the Jardine cat-back on my car and it sounded good and was quiet on the highway but it wouldn't fit around the trailer hitch so I switched to a Random Tech cat-back. It sounds good, nice rumble at idle, quiet while cruising but it's a straight through muffler so it opens up loud at WOT. If you're interested, I have an SLP y-pipe for $50 but it's for the 2000-02 cars and you might need an extra piece for the 98-99 since they had a different cat layout.