It happens also when I attempt to get parts for my 1960 VW with a 6 volt system originally that now has a 1962 or so Motor with a 12 volt system. Forget counter dudes and dudettes, try transposing part numbers for 1961 and above for my 1960 which, BTW, was a bit of a red headed step-child when talking about model years for VW. All separate, specific and mostly unique parts for 1960.