The fifth-generation Ford Mustang was manufactured by Ford from 2004 to 2014, at the Flat Rock Assembly Plant in Flat Rock, Michigan. The fifth generation began with the 2005 model year, and received a facelift for the 2010 model year. Originally designed by Sid Ramnarace through late 2001 and finalized in mid-2002, the fifth-generation Mustang's design was previewed by two pre-production concept cars that debuted at the 2003 North American International Auto Show. Development began on the S-197 program in 1999 shortly after the 1998 launch of "New Edge" SN-95. From the second half of 1999, design work commenced under Ford design chief, J Mays, and concluded in July 2002 with the design freeze. There have been several variants of the fifth-generation Ford Mustang that include the Mustang GT/California Special, Shelby Mustang, Bullitt Mustang, and Boss 302 Mustang.
Throughout the 5th generation, besides the different variations there have also been occasional “face-lifts” to the relative body style. Engine options also ranged from a 4.0 V6 to a 5.8 V8 offered by shelby.