I have looked all over the site and have researched online with no luck. My 2011 GT has dual exhaust. I would like a louder exhaust but prefer bolt on and would love to be able to hear what it would sound like before I purchase. I want it to be louder outside the car but not inside. Although I am upgrading the stock speakers and sub to a much higher output. Most I find are not dual exhaust it seems and many people have good examples for a GS exhaust or for a GT earlier year model. Thanks all !