Hi
The Susquehanna's Popemobile is a former UP dome car. I have a Kato C.O.L.A dome obs that is a dead ringer apart from the rear window glass, and that will change one day.
Also, I have seen a photo of a GB&W business car that is similar looking to the Susquehanna one, but the photo was at a narrow angle, so can't identify much from it.
Awesome work Skytop, great looking car.
Cheers
Steve