>>1106545>>1106852The T1 and S1 are nice but they're enormous beasts. The S1 was even bigger than UP's 4-8-8-4 Big Boys.
How about something a little more modest, like a mason bogie engine? An 0-6-6T or 2-6-6T pulling a few jackson sharp coaches would be a comfy enough ride.
https://en.wikipedia.org/wiki/Mason_Bogie