Do the GT500 stock mufflers have a better flow rate then '07-'09? Louder?
They do have the larger 4" tip, didn't know if internal piping/baffling was larger as well?
Also, would anyone know the Ford part number for the 2010 mufflers, should be on bottom of muffler and start with F-1-?
They do have the larger 4" tip, didn't know if internal piping/baffling was larger as well?
Also, would anyone know the Ford part number for the 2010 mufflers, should be on bottom of muffler and start with F-1-?