GP9 B-Unit Standard Upgrade Kit This easy-to-install kit includes all parts necessary to add ElectroCouplers and to make your existing lights direction activated. SKU: 6-22961 Dimensions: None Gauge: None price: 59.95 year: 2000 rail line: None Minimum Radius: None Catalog Year: 2000 Catalog Title: Classic Trains Vol. 1 2000 Road Number: None GP9B's Upgrade Kit (71-2962/71-2979) - 3/98 Manuals Find the latest manuals in our support section. Replacement Parts Buy any replacement parts in our support section. Contact Contact a service station to fix your product