Pull both front rotors, visually inspect bearings,pack well with grease,then, tighten castle nut as much as you can while keeping hole lined up and rotor turn
s easily.
Anything bearing related should show upDrain power steering fluid and replace with new..
If ujoint was bad,check rear one and carrier bearing. Without seeing treadwear on tire,that covers the simple stuff as long as you have checked bushings.
Measure rear axle to frame on both sides. Only saw leaf springs causing wobble one time. Even a bad rear shock could be the blame

 

The blue shock is stock on 92 vandura 2500. Sachs are off a late model burb and they Smooth out the ride a lot for $18 and a afternoon install