Union Pacific 3900 Series 4-6-6-4 Challenger drawings, engine only- Four Wheel Trailer Truck Frame (3,4,5)
		SKU/Drawing Number: GSC 53167
			| Scale to 1 ft.: | 1 1/2” | 
| Wheel Arrangement: | 4-6-6-4 | 
| DWG. Size (in): | 30x41 | 
| Drawing Title: | Four Wheel Trailer Truck Frame (3,4,5) |