Sorry, Jim, but the "Mud Hen" name was reserved for the K-27 class. (450-464). 464 survives in Michigan, 463 is on the CTS (formerly owned by Gene Autry after DRGW), and the tender tank of 462 survives on CTS as water car. The rest are gone.
The common locomotives on C&TS and D&S are K-28 class and K-36 class (480-489) and K-37 mikes (490 class) <There are a few consolidations(C class) and ten-wheelers(T class) around Colorado as well as these K (-Mikado )class
Only 3 of the K-28 class (473, 476 and 478 survive in Colorado; the remaining 7 were requisitioned by the US Army during WW2 and served their time on the White Pass and Yukon. After the war they were returned to Seattle and scrapped. K-28 were the usual engines on the fast NG passenger trains from Alamosa to Gunnison, and Alamosa to Durango.
BTW The K-37's were the ones converted from standard guage engines.