First glimpse of 5S319, the '65 GT350 Shelby Prototype for the '66 GT350s. 5S319, the factory engineering prototype for Shelby American has the following rare features including functioning side scoops for rear brake cooling, rear quarter windows for better visibility, underride traction bars for better traction, a rear spoiler to improve the stability, an AM 8-track radio for music and '66 spec GT350 side stripes... All of which were features on the 1966 models except for the rear spoiler that wasn't available until the 1967 models.
5S319 probably was the first American car to have ever received a factory rear spoiler and the only known Shelby GT350 to have received a rear spoiler before the 1967 models.
On August 14, 2010, this rare Shelby was sold for $201,000 at the Mecum Monterey auction during the famed Car Week in Monterey, California.
