The first year of the big-block Shelby debuted in 1967 when Ford installed a 390ci V8 engine in the standard Mustang GT model.

It opened the path for Carroll Shelby to take the whole concept a step further by offering a 428ci dual-quad big-block to his elite group of Shelby car enthusiasts.

The results were a radical departure from the standard-looking Mustang.

Through the extensive use of stylized lightweight fiberglass on the hood, trunk and side air scoops, the already highly popular pony car was transformed into an aggressive race-ready-looking Grand-Touring muscle car we know today as the Shelby GT500.

The '67 Shelby sported good looks, performance and a whole host of upgraded options, such as heavy-duty suspension with thicker anti-sway bars, functional brake scoops on early cars along with inboard headlights, power steering cooler, 15x7 cast aluminum wheels, functional roll bar and shoulder harness, oil pressure and amp gauge cluster, Traction-Lok differential and a 140 mph ...