Flowmaster American Thunder Rear Muffler with 3.5" (89mm) polished Stainless Steel tip.
Suitably for all Mustang 4.0 V6 2005-09 (including Convertible).
Flowmaster mufflers have a unique, in the scene much admitted and loved deep sound. Flowmaster promises Power gain with this mufflers. - e.g. Torque increase.
A soundclip may be found e.g. under:
youtube.com/watch?v=0OPEbmGj050&feature=related
Complete with 2 clamps and a detailed fitting instruction in English.

This muffler does not have a TÜV approval, ABE or European Union identification.