Looking for a nice sounding exhaust

Hey guys I havent been on in awile I see the forums are still very active thats good to see. Well let me get to the point here I have a g6 gt sedan and looking to do some upgrades to it this summer and im looking for a nice sounding exhaust im looking for somthing strong at least as strong as I canm get with the 3.6l and maby some pointers on any other upgrades I can get for the engine like supercharge or what not. Im not a car pro or nuittin but I have fallen in love with the g6 models amd the g8's hopefully ill have one of those soon.