What exactly does sYc stand for?

[JoeC]

SYC most likely stands for "Yenko Sportscars." In 1966 Yenko built his modified Corvairs to race in SCCA competition. They were converted to a two seat sports car with a fiberglass panel to make it look more like a coupe instead of a sedan. The Chevy emblems were removed and Yenko Stinger decals and stripes were added. The Stinger had many other modifications and Yenko was classified by the SCCA as the manufacturer. Yenko had to prove he built at least 100 Stingers and had to submit the serial numbers to SCCA. You could not race a Corvair in that class - you had to have a Stinger registered serial number. I have an original SCCA book "Production Car Specifications" where the production car model is listed as "Stinger Coupe" and the manufacturer is listed as "Yenko Sportscars." Also there is a cover letter written by Yenko where he introduces a new Yenko Stinger based on the Vega. In this letter he writes "Yenko Sportscars" distributed such names as the "Yenko Super Camaro" the "Yenko Chevelle 427" and the "Yenko Deuce." Although the term "supercar" was used in the mid 60's, I have so far not found any Yenko literature that used the term "Yenko Supercars".