Registry statistics as of June 30, 2014, can now be found on the registry statistics page.Over the last six months we've added 22 new cars, bringing the total number of registered cars to 2,903 from from 2,881. That's a little over 16% of the 18,049 428 CJ non-Shelby Mustangs produced during the 1968, 1969, and 1970 model years.