Tiny Town is rebuilding his 2-6-0 coal burner #10 this winter. I called Elvira at Tiny Town about the possibility of running an engine next season. She wanted to know if I knew how to put them back together. Since it was phone-tag I couldn't delve into it deeper.
Tiny Town outsources it boiler work so it may involve mating the boiler to the running gear.
Could be interesting.