From chatting to a local traffic officer he wasn't bothered by my plans for a side exit on the 4paw but he said it still had to conform to the sound limit which isn't and issue because its actually Louder than most track day noise limits. But he also said it had to exit on the drivers side by law as when stopped at traffic lights and what not if you have a passenger side exit it would be pushing the toxic gasses right into people walking on the pavement.