Could this be a retro-fitted locomotive? Sheds like KJM have converted at lot of their WDP-4 locos into WDP-4B specifications ( 6 traction motors) including a widened cab profile. And funnily enough, all of KJM's upgraded locomotives are still marked as WDP-4 and not as WDP-4B. Could this be a case where the shed converted the locomotive to WDP4B specifications while retrofitting the cab?