This is a NOS Rail Power Products EMD SD7/9 Undecorated Shell/Chassis/ Non-Dynamic Brake version. I bought it at a train show and got a major surprise when I saw it included most, if not all the detail parts to finish it. Per the included Instruction Sheet, the entire RPP kit is complete. and unstarted.Sealed in factory bag parts are Half fuel tank, fans, non-Dynamic Brake roof insert, air tanks, and step guards. Also included is a sealed set of Smokey Valley SD9 handrails,  a  sealed Detail Associates Paper Air Filter Assembly, and also a set (2 in sealed package) Keystone Locomotive Works metal Coupler Pilot Piece. I almost forgot the Rail Power Products #116 CF-7 Light/Number Boards (also sealed/Picture 8)).The RPP Shell/Chassis is made to accomodate either the older Athearn geared SD7/9 chassis OR the newer flywheel version, which is still Blue Box and old. This KIT is for the accomplished modeler and requires paint , assembly, and further completion. I don't know the prototype that was being modeled so my guess is that all of the detail parts were for a specific engine or series of engines/railroad unknown. Please message me w/any questions. USPS Ground Advantage shipping and Combined Shipping w/ mutiple purchases