Is there any way to identify a zone car? I have a 67 SS/RS convertible. I was talking with Scott Settlermire and he touught it might be a zone car because of some of the options, and build date (11/66). A/C in a convertible, headrests, shoulder harness, power windows, fold down rear seat, AM/FM, tilt, deluxe interior. 11/66 build date. There's some chalk marks around the trim tag that I've never seen on other cars. It was sold new at Courtesy Chevrolet, San Diego. Just a few blocks from the zone office