The prototype of the car was built by Conrail's Holidaysburg Shops from 12/86-1/87 (Series 53100-53249) The car was built from Bethlehem Steel Corporation kits and equipped with Miner Enterprises Incorporated gates. This HO 1:87 HO Conrail Holidaysburg Shops BH1D MOW Ballast Hopper STL files comes with the body, A end box style 1 & 2, solar panels, brake wheel and coupler box covers. The only thing you need to complete this model is some 100-Ton rolling bearing trucks with 36' metal wheels and metal couplers of your choice. Also you need 2-56 x 1/4 phillips pan head screws for the trucks and 2-56 x 1/8 phillips pan head screws coupler boxes.