Frame is definatly pre 74, could be 72, ...........front end if from a 77-79 standard with the mud-catcher rims,.............has a chrome rear 18" rim on a hub pre 74, could be 72............has a set of 34mm forks that are pre 76, could be 72...........rear wheel looks to be from a 79 SII, alloy 16" rim, one off, rare..............parts bin shows a chrome rim that looks to be from a 79SII, metal air-box standard 74-79, tanks 78E and Special........Tail light bracket from a 78SE/79SF-SII/80G........seems to be 3 bikes with a 72 frame