Southern RR's customers ask for 100Ts of cement rather than the usual 70Ts. So the rr started converting the 70T to 100T cars. They did this by adding to the top, 100T trucks with brakes, and bracing. Each car was different as they were prototype kit bashes. [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ]