Another Larry with an Astral Silver...
I would change the diff. fluid(s) to some fresh new synthetic, use LSD additive in the rear if you use anything other than Royal Purple, FWIW, I personally prefer Amzoil.
And synthetic for everything else...tranny, transfer case & power steering (all three use ATF), grease front bearings, hit all the zerks on the rear drive, crankcase oil & filter, & a new fuel filter couldn't hurt either.
Whine isn't usually bearings, rear bearings usually make a low rumble that sounds like distant thunder when they say goodbye.
I would try adjusting some of the play out of the steering before I started replacing front end parts, though at that mileage, there may be some needed. Look for a post by Maugan VX for the info on steering adjustment.
Energy Suspension poly sway bar bushings also help tighten up the cornering, and as an added bonus, they're greasable...again with the search...
There are "how to's" on just about everything I mentioned, make friends with the search function & WELCOME to the Fam...
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