This high hood kit replaces the low short hood on an Alco RS-3, making it an accurate representation of the four "hammerhead" RS-3s the Western Maryland rostered. It could also be used to model Lehigh Valley RS-3 211. I designed this around the new Bachmann RS-3, but I'm sure it could work on the Atlas RS-3 as well, though I haven't checked. Simply remove the low short hood from the cab and walkway - leaving the battery boxes in place - and replace with this hood. Make sure that you remove the brake wheel and headlight lenses as they can be used on this model. I have also made holes for all of the grab irons, and included a matching set of number boards for the long hood, should you feel so inclined to add them. I have made the location of the louvers slightly raised so that Archer louver decals can be easily added. I find these to be of much better quality than the 3-D printed louvers. Contains parts to modify one locomotive