I have an axle back for sale that will fit any 11-12 GT. I made this myself using Spintech Sportsman 3" mufflers. Uses factory mounting pipe to the over the axle pipe for no leak fit. Also uses the stock Tips off the 11-12GT. This system sounds great and never leaked. I'm buying l/t headers and a matching exhaust and thats the only reason I'm selling it. $190 plus shipping.
