im not sure how many, but i do see a few from time to time on coal trains as second out. kinda like the unpainted sp motors. they are few and far between but come around cuz it seems like they send all the old s%&t this way. most are repainted and given new numbers but the ones that havent yet, ive seen have had a number in the 6000 range. cnw and sp included. if they have been fitted with the harris box (dp) then they might be on the lead or dp unit. other than that im not sure. we still have a few ssw units in use for other jobs that are the black and red. older gp40s and the like