Origionally an "undecorated GP-20" LIMITED EDITION Proto 2000.  Air Conditioning Unit added along with BNSF markings.
This is a reproduction of an actual unit spotted behind an SD70MAC at Hoffman Ave. in St. Paul, MN.  Excellent Shape...Runs Excellent!
courtesy of:     www.ModelRailroadServices.com    OR   Msoebbing@cadets.com