Barely used Magnaflow Catback system part number 15883 with the Magnapack mufflers for sale. This system fits all 2005-2009 Mustang GT, including Bullitt. I had this system professionally installed, drove the car for about 20 miles and then had them un-installed and re-packaged in the box. A little too aggressive for me. Includes all original packaging, documents, warranty and installation instructions. I am asking $400 or best offer.