If you do not find.
Have complete rebuild 3:45 , 3:64 4:10 and 4:44ltd slip diffs.
with spacers ,harley ware and machined flanges for 2002 cv.
If you are looking for 3:9 you will need to supply a ring and pinion set to build.
As always "not cheap"
Best to call 8182030639
Jack