The 1968 Ford Mustang Shelby GT350 is already a legend on its own. The '68 GT350 was upgraded to the portent 302 cubic-inch V8. Plus, the upgrade to a Comp Cam 271H camshaft really gives an extra attitude to this speedy Shelby. The V8 inhales deeply with a Holley four-barrel carburetor, and it makes a sweet sound out of the dual exhaust.