Mark, make sure you do a full log for building that loco! I can’t wait to see how it turns out. Other than the Roundhouse live steam model, I have never seen any other attempts in this scale of that Sandy River arrangement.
Joe is right also, it is Sandy River and the gauge would be 2 foot. So I guess thats 7/8 scale?
I have a Connie too, with a stripped drive train- not sure what to do with it yet at this point. I did a little bit of modifying for the time being and stripped off all of the valve gear to give it a “stephenson” look.
And with a new live steam loco on the way, and a new layout in planning, it may be on the back burner for a while now anyways. But with the likes of summer here in arizona most of my “projects” are done during the summer time.