I did it today - no kidding - in a little over 2 hours. I did have to build some cribs yesterday for my jack stands and extra cribs for middle of bronco because my tall 12 ton jacks were in use already - so I used four 6 ton jacks, cribs in front with a pair of the 6 tons, and two hydraulic jacks for the axle.
I have BCB's adjustable trac bar and was able to replace my c bushings and radius arm bushings (the donuts) without pulling the trac bar.
Pulls tires, unbolted shock to radius arm (left them hanging off frame mounts), disconnected front drive shaft, removed draglink, jacked up body to get weight off springs, pulled springs & spring cups, lowered frame on to tall jack stands (behind bumper and middle of frame behind radius arm mounts), loosened radius arms at frame, removed bolts holding c's in, wiggled radius arms out, cleaned c's up and greased them, fought new greased up bushings in to place (used the frame mounts to make sure I didn't get bronco lean instead of the ground), hooked everything back up (fought one bent top spring clamp into place - these things suck, ugh).
Son and I just went on a ride and things were so wonderful and smooth and no wobbles up to 80mph.
I posted some pics on the Facebook page "Early Bronco Drivers" - don't have them here to add to this post, sorry.