Hi All! I posted the same question on another site also. I have an 04 GTO and I recently put the SLP Loudmouth on it. Im doin it all backwards so now I want to put and 05 Rear Bumper on. I have a local guy who does great body work and Im sure he can make the muffler openings bigger on both sides to fit the slp on both sides. My question is. Is there a way or can I add another SLP loundmouth to my GOAT???? I love the look of the SLP pipes and think a double dual exaust on both sides would look hott. I also got a guy around town who can makes custom exausts so if it can be done I have someone to bring it to! Any help would be great thanx!!!!!