Does anyone recommend an exhaust setup for a 2004 bonneville gxp? I've heard people switching to 3 in piping but that'* about it. Maybe dual is possible? Also mufflers maybe some borla xr1 or magnaflow hi-flo performance round? Any recommendations? Please and thank you

unless you are going to get it tuned, not very easy on a northstar, there are very few places doing it. i would not change it, it will be lean with no way to fix it. you could probably put a aftermarket oem size and style muffler if you want it louder.