Pre-refurbishment took place during the 80s-90s and were without high intensity lights, originally numbered between D6600-8 & D6819 and also will fit the split chassis  locos numbered 37120-37308 made in the 2000-2010 period Bachmann production

NOTE this may or may not fit the Poole production solid chassis type ,with the  later bodied plug in nose cone type haven’t tried it yet