Who here has or has heard the Gibson Dual Extreme catback on the 5.3? I'm trying to figure out what route I want to go with my exhaust and was thinking about a muffler swap/add tip or a complete catback. I recently found the Gibson Dual Extreme catback at a very attractive price but wonder if it has that deep low rumble that I'm looking for. I'm not a fan of the raspy exhaust tone and I have kids so I don't want it to be obnoxiously loud.