Hi guys, reviving this topic again:
Here is an update: Left side is still sagging by one full inch compared to right/passenger side. (1")
Replaced recently: Upper mounts, bearings, struts and springs. Everything north of the spindle/knuckle is new and/or known to be good parts. The body is rust free, no visible tweak to frame, etc.
At this point, I'm wondering if the drivers spindle/knuckle assembly was replaced at some point. If so, does anyone know if the later generation R50 spindles are different than the early gen R50? I tried looking up the parts, but most diagrams don't show the spindle part# for some reason.