Home Ā» Mecum July 2015 – Four Flawless Mustang Mach 1 and Shelby GT500KR Fastbacks Ā» 1968 Shelby GT500KR Fastback 9 1968 Shelby GT500KR Fastback 9 Home Ā» Mecum July 2015 – Four Flawless Mustang Mach 1 and Shelby GT500KR Fastbacks Ā» 1968 Shelby GT500KR Fastback 9