The most reasonably priced component used on the G5b 1974 Canada Transmission/change Drum ('72-'7 is the Washer-spring,6mm.
The forty-two G5b 1974 Canada Transmission/change Drum ('72-'7 component parts are all listed in this schematic.
Parts such as the Transmission/change Drum ('72-'7: Ring-snap,16mm, Pin-gear Change Drum, Washer-spring,6mm, Plate-change Drum Pin are included in the G5b 1974 Canada Transmission/change Drum ('72-'7 parts fiche.