found on another forum...nice reference.
FINAL DRIVES.......YEAR/MODEL........................RING/PINION.....NOTES
5JW-W4612-00-00....03-05 FJR1300.....................33/9, 3.667.....2,6,8
3P6-W4612-01-00....06-up FJR1300.....................33/9, 3.667.....2,6,8
1FK-46101-01-00....85-95...