Yep they started building them in February 1967, LP23H72xxxxxx. I have owned a couple 67 GTS convertibles only have one right now, approximately 12-20 made only 6 known at the moment, LP27H72xxxxxx. They all had standard Dart GT trim with flat hood and all GT emblems except the fenders which had GTS and 383 FOUR BARREL emblems, all had manual front disc brakes and 280 HP 383 engines with 17" unsilenced air cleaners.