there will be a part number on top of shock body. let me know part number and i will tell you what they are off. they are pre 1980 though
have you got any 1980 RM shocks? im looking for some
what OD are forks? if 36mm i would possibly say they are 78 RM, if 38mm 79/80 RM. threaded hole in top clamp for numberplate would usually indicate its not for PE