I repaced the one and only outside mirror on my car ( Left side). In the door was a threaded weld-nut that the mirror mount screwed into. I would like to put a right side mirror on the car. I don't know if there is a threaded mirror mount nut inside the right side door as on the left side and I do not want to drill a hole in the door and find nothing in there to mount the mirror. Has anyone been through this activity and can tell me if there is an internal mirror mount on the right side door? It is a '74 Super Beetle.