Well, if your going to get headers and plan on moding the car preaty well I would just get long tubes. you can get them from ebay, rpm-mustangs.com, speedconcepts.net, rpmoutlet.com just to say a few. Any speed shop should know what they are doing and can get them to work on your car. but, headers are no good unless you plan on moding your car well, like heads, intakes, cam stuff like that.
2004 Mustang GT
Shadow Grey Metallic 40th Aniv.
Mac CatBack Exhaust, Mac ProChamber, K&N FIPK, Mach 1 Chin Spoiler, Mach 1 Grill, Bullit Antenna, Bullit Interior Pieces