Found another crack. PHB mount on the axle side was cracked. The vertical face towards the inside of the axle was 100% cracked. This is also another known problem for 3rd/4th gens. Put your eyes on these parts often. I've welded up a few over the years.
Also - the weld didn't fail, the bracket did in the HAZ. Another example of these cars are being pushed harder than the material has the strength for.