The Shelby Mustang is a high performance variant of the Ford Mustang, built by Ford from 1968 through 1970. The 1965, 1966 and 1967 Shelbys were a series of Ford Mustangs which were specially modified by Carroll Shelby's company and sold under the name Shelby GT with identification badges Shelby Cobra. From 1968 the model became the Shelby Cobra GT. The program was factory-sponsored by Ford to compete with the Corvette, also factory-sponsored by Chevrolet, neither of which could be built for the sales price charged. In 2007, following the introduction of the Fifth-generation Ford Mustang the Shelby nameplate was revived for new high performance versions of the Mustang.