Development of the GT350 began in the summer of 1964 when Ford tasked Carroll Shelby with creating a variant of the Mustang to homologate for competition in the SCCA’s B Production class. A total of 504 examples were built during the first seven months of production. The first 100—sometimes called “double-digit” cars—were assembled at Shelby’s Venice, California facility before production shifted to a plant near Los Angeles International Airport.

All 1965 GT350s were finished in Wimbledon White with…