in 68 they California Special Mustangs. Mostly badging, with Shelby side scopes, deck lid and sequential tail lamps (67 TB actually). Who knows, maybe they got a little crazy in Kentucky.
but the bostonian, and other city editions, were only in the previous generation cougars. i wouldn't put anything past anyone in the south, so maybe it got some kind of badge or something. the least they could have done was use an XR-7, not a base 3.8.