I have a set of doors that look from the body style that they are from a 1969 mustang mach 1 but they also have wing windows and chrome mirror mounts. Was this an option? The drivers side door no longer has the label plate. Is there some other way to tell what year these doors are from. I've spent the past week looking at pictures online and can't figure out what car these came off of. Any help would be appriciated.