Check Gaylord: http://www.gaylordslids.com/classics.php They are the only one I know of, doing a 68-72 cover. Google might find others. There have been plenty of posts here with pictures of the Gaylord cover.
A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!