2015-16 Mustang GT 5.0L 304 stainless steel 3" catback dual-exhaust with H-pipe, retro chambered mufflers with 2.5" cores and mirror-polished stainless steel slash-cut conical double-wall tips. Includes hangers and clamps and is designed to mate to Stainless Works Ford Mustang headers (which maintains a full 3" diameter, and does not neck-down.)