The Shelby Mustang performance muscle car was first built in the 1960's. It was originally a series of Ford Mustangs which were specially modified by Carroll Shelby's company. The program was factory-sponsored and production was eventually moved in-house.
The 1966 was differentiated in body color (non-white versions were introduced - colors included blue, red, green and black, as well as the original white) and trim. The first 252 GT 350's for 1966 were 'carry-over' cars. They had the 1965 Ford Mustang bodies and 1965 Ford Mustang serial numbers under their Shelby serial numbers. They had mostly 1965 features including standard Koni shock and engines painted black.
The 1966 production was 1,373 fastbacks, including two prototypes, four drag cars and 252 'carry-over' models with 1965 Mustang bodies. A total of 1,001 Hertz fastbacks were also produced. Additionally, four convertibles were built, for a total of 2,378 units for 1966.
The Hertz cars were born when Shelby struck a deal with the Hertz Corporation to produce a special line of GT350s for rent which were sold to the public after their rental-car lives were finished. Shelby produced 1001 of these cars: Approximately 800 in Raven Black, and 50 each in Candy Apple Red, Wimbledon White, Sapphire Blue and Ivy Green.