The Shelby Mustang GT500/KR was built by Shelby American during 1965 until 1970. It is a high performance version of the Ford Mustang. In 2007 the Shelby nameplate was reintroduced after the fifth generation of the Ford Mustang was produced. The 1965–1966 model was the lightest and smallest of the GT 350 models. This particular model was commonly referred to as the “Cobras”, because similar to the actual Cobra model produced during this period, both models display the Cobra emblem, the optional “Cobra” valve covers on many GT350s that were part of a marketing tie-in by Shelby, and similar paint schemes.
In 1967, the GT 350 carried over the K-Code high performance 289 with a ‘COBRA’ aluminum hi-rise. The GT 500 was introduced to the lineup, equipped with the 428 Police Interceptor. The later cars transferred over few of the performance modifications of the 1965–66 GT350s, however they did display more exterior modifications. The GTs dropped the Cobra tag for 1969 and once again were marketed only as Shelby GT 350 and Shelby GT 500. Ford was intrinsically involved with design and style decisions, with Shelby having very little input. The GT 350 and GT 500 for the 1969 model year underwent an impressive face lift, the body by itself was increased in length by 4 inches. The GT 350 is now equipped with a 351 cubic-inch V8.
In 1970 actual production of the Shelby GT 350 and 500 models was not done, but under FBI superversion 1969 models were given 1970 vehicle identification numbers. Two changes were applied to the 1970 models, two black hood stripes and a front chin spoiler. In total 789 were re- VIN’d.