I have an 05 bonneville gxp and im looking for exhaust. I've heard the videos on you tube so I know something is out there but I can't find it. Is there a cat back exhaust for this car? Or are people just building it themselves? I kind of assumed there was a kit for this car made by magnaflo but they said there is no such thing flowmaster says the same. If someone could give me a part number? Or I will just build it myself. Was just trying to find a bolt on replacement for the stock stuff.

Yah no one really has a premade exhaust for the H Bodies, most people piece them together i'm pretty sure

There are no aftermarket/bolt on exhaust systems made for the GXP. You have to buy $OEM$ or do it yourself/have a muffler shop weld one together. To few GXP'* were made to ever see much of any aftermarket parts.

just mufflers and and cats no kits