If you are talking about the inner and outer tapered bearings on the stub axle, it depends.
I took mine out (as part of the 5 stud conversion) and bought the bearings, but took it to a suspension shop (with a copy of the relevant pages of the TRSM) for them to reassemble it, as it is a bit involved. The arms were out of the car of course.
It is a similar setup to a Crumpledore IRS setup. They charged me $45/side to reassemble.
If need be, I have the bearing numbers here with me.
What is wrong with your bearings ? Pulling mine apart showed absolutely no wear whatsover, and the grease was clean as a whistle !!