[Greg tripp]

S/C stands for semi competition. Shelby built some of these for track back in the day. These had rollbars, sidepipes...etc. There were 4 models of cobras. 289 street & race version and 427 street & race version. Also some drag cars...(dragon snakes). SPF or superformance has the 427 s/c version along with the 427 street version and now have the 289 version. Shelby has the same models available in aluminum or fiberglass for more money...Paying for the "Shelby" name. hope this helps. Not a earlier version. It's a model or style of cobra.