The CALIFORNIA SPECIAL and HIGH COUNTRY SPECIAL were designs FORD was trying to take over marketing from SHELBY. I think they trimmed out nicely myself. It all depends on how far you go with and color choices.
CALIFORNIA SPECIAL. com-
Be advised that the C/S uses a special deck lid and quarter extensions and a factory hood (although there are GT-350/500 fiberglass repros that will fit a regular MUSTANG. Same with the rear lamps. There was a special fiberglass rear body panel that snapped over the factory rear body panel to mount either the TBIRD or COUGAR rear lamps.