After I bought the car we replaced sub frame bushings, trailing and bearings. All good. When we replaced the axles we had the help of a guy who "done it before" with a mallet. Well, the boots started leaking. So, I looked at repacking, OEM and remans. Ended up getting OEM because of a discount connection. It was cheaper than paying for a repack. (I lost my lift contact!)
While you are there check the diff bushing. I wanted poly but replaced with delrin and the noise (whining) could be from the solid, hard delrin. Thats another thing for another day.
Now is a good time to check the diff or go LSD, brake lines, sensors and bearings. It was costly but now I can drive the **** outta the car.