Can be done starting with this; GM#22712778 Some use the late model Camaro Muffler from Magnaflow which gives you dual in the back but not throughout.I have another question. Does someone make a dual exhaust kit for the G6 GT? that is two separate exhaust tubes from the headers back to the tail end?
John Ross
More reading here;
https://www.g6ownersclub.com/forum/...ting/12620-dual-exhaust-2006-g6-gt-sedan.html