2012 and up owners of Boss Mustang's equipped with side exhaust can now take full advantage of that and get great sound in the process. We not offer side outlets on our X-Pipe that'll allow you to easily bolt up your side pipes. What's really cool is the sound you'll get as the exhaust exiting the side pipes will be scavenged thru the X-Pipe. We strategically located our side outlets to enhance sound without negatively affecting performance. As with all ARH systems, all side outlet components are 304 SS and the flanges are 3/8" thick.