Hi does anyperson know which year diffs fit all or some year bike ,isn,t their some differences with ABS sensors fittings and ratio on some more recent units and their seems to be a change late 2006(according to realoem) .Seen some used diffs lately and have not bottomed out which units fit my early 2006 ABS bike.Would be most grateful if sobody knows the way round these part numbers.Rgds Allan