Convert the single exhaust on your 2005-2009 Mustang V6 into a true dual set up with this BBK dual exhaust conversion kit. Combining a GT axle back and the included BBK Performance off road x-pipe will dramatically increase the sound of your Mustang to a roar that will be sure to turn heads. This conversion kit designed to be used with factory or aftermarket shorty style headers and requires the use of an axle back exhaust for Mustang GT and both driver side exhaust hanger brackets (not included). The rear bumper cover will need to be modified to clear the driver's side exhaust tip or you can use a GT bumper cover. BBK V6 Mustang dual exhaust conversion kits include a full 2.5" mandrel bent stainless steel X pipe with high flow catalytic converters along with the added drivers side tail pipe.