Maybe one of these similar products would be of interest:-
NORTON AMC GEARBOX GASKET SET 1957 > 67
NORTON AMC CLUTCH SPRING ADJUSTER NUT X 3 PRE COMMANDO AMC CLUTCHES 04-0389
AMC norton 040119 gearbox selector fork
04-0038 NORTON AMC '57on GEARBOX GEAR LEVER RATCHET SPRINGS X 2