cutlass66

I recently bought a 1966 F-85 Deluxe, and have a question to satisfy my curiosity. The f-85, f-85 deluxe, and f-85 cutlass were the 3 different options for the f-85... but how are these 3 types different (aside from the emblem on the dashboard)?

Also, a second issue comes to mind: the driver's side mirror is loose and always moves when I hit a bump. There's no screw on the outside to tighten it... anyone know how to fix it or do I just get a new one?

Thanks so much for any help.