Isn't the rear view mirror on a '69 supposed to attach to the roof?

[Mister-B]

I have a '69, but the mirror is attached to the windshield. I looked at the brothers catalog, and they show that on a '69, it is supposed to be attached to the roof, with a bracket that hangs down. I'm confused though, because my roof in the middle between the sun visors doesn't have any holes in it where the original would have mounted.

Is there something I'm missing?
Posted via Mobile Device