Ceramic Coated shorty header provides street legal performance (except California). Bolt on some power and enjoy the sweet sound of Magnaflow. vehicleengineyeardescription Ford Mustang 4.6L 1999 Except California Ford Mustang 4.6L 2000 Except California Ford Mustang 4.6L 2001 Except California Ford Mustang 4.6L 2002 Except California Ford Mustang 4.6L 2003 Except California Ford Mustang 4.6L 2004 Except California