I did some toying with my exhaust the other day. I currently run 2.25" flow tubes with Thrush turbo mufflers and turndown tips dumped. It's good and bassy at low RPMs but really quiet otherwise. I bought some 40 series style mufflers and tried them, but they weren't what I was after so I sold em. I listened to the car with just the flow tube pipes and no mufflers, I have 6 cats, and it wasn't obnoxious at all. I'm thinking just some glass packs with turndown tips might be what I'm after.