Ready to rev up your late model Ford Mustang with the loud pedal? Yeah, we thought you were. Finally, there’s some silver linings beginning to seep out from the year-end clouds…and it’s just in time. The Interceptor Axle-Back Quad Tip exhaust system by MRT Performance is going to seriously tweak & tune up the 2013 Shelby GT500 and the 2014 Shelby GT500. Keep reading to check out the details in the Press Release, as well as get a flavor of the exhaust note from the included video.