So, the question now is: has anyone put a 47-53 Fulton Sunvisor on a 54/55 truck cab? Pictures of the attachment points would be nice to see.

I have seen very poorly installed Fulton visors on 54/55 cabs (as Stuart describes - with side brackets attached to the roof, not inside the "drip rail"). One visor was from a 53/54 Chevy car and might have used the car's attachment brackets.

Tim