Nightmist Blue 1967 saw the Mustangs first major redesign, It got a larger engine bay, so Ford could fit their first big-block engine in the Mustang. The Shelby Mustang was a high performance version of the Ford Mustang which were built by Shelby America from 1965-1970. To enhance the look of the cars, the Shelby had replacement fiberglass body parts; hood with functional scoops, four add on side air intakes, fiberglass tail, with moulded spoiler and sequential turn-signal lamps borrowed from the Mercury Cougar. Driving lights were mounted in the center of the grille (some were moved to the sides to meet state laws). Inside was the deluxe interior and a roll bar. In 1967, the GT350 was still available with the 306 bhp K Code 289 V8 with high riser manifold, but also available was the GT500 with 428 Police Interceptor engine with twin 600-cfm Holley 4 bbl carbys 2948 GT500s made (1175 GT350s).