After doing some research, I will probably go with the 2011-14 Ford Mustang Ford Racing GT500 Axle-Back Exhaust Kit GT - S197 M-5230-MGTCA1. I am interested in opinions on the 2011-14 Ford Mustang 5.0L Ford Racing Clamp On X-Pipe Section, After Cat GT - S197 M-5251-MGTA. Is it worth it and the difference with/without it. Any input is appreciated. Thanks

 

Two things, you could get the Borla S types from us which is a little cheaper than the FRPP AB's and a practically the same thing. For the After cat x pipe, it doesn't offer any performance gain and minimal sound difference so I would save your money for something different.