heres the only pic i have of my broken housing
we need more info on this one, what year is the housing, is this the factory spring perch or did you weld them on.
I don't remember who told that the newer style housing (95+ I think, the longer ones) is weaker then the older ones.
from y experience, the rear axle has no strength issue, I once pulled a friend out of a real heavy mud hole about 4' deep,
I was bouncing all around, it took me about 8 time before I got him out with the pedal to the floor, that was on my
88 pickup v6, that rear axle is now on my runner and is in good shape.
v6 third member have more ribs on their side which resolve the issue of the third flexing and allowing some binding and
this is how most breakage happen.