GW 2243 was a former ATSF GP7 modified with a "Topeka Cab" a/k/a Frankenstein cab. Here is is seen switching in the BNSF Fort Collins North Yard by OmniTrax. Notice the bell was unusually mounted on the Fireman's side ahead of the fuel tank. This photo has been heavily processed in Photoshop to better reveal details under the deck. This unit also has a "liberated exhaust" on the roof with 4 separate exhaust headers. Remains of screen wire over the spark arrestors have been removed.