Oops, I misread the posts.
65lwb, you think this box is fixable then...
Basically, the clam shell style mount needs to be tightened, correct? I had tried tightening the two bolts, but, they are torqued down very tightly already.
Maybe trying to remove some metal would be my next step. I'm assuming a machine shop could get the curvature somewhat perfect.
Yes, the crack is on the steering shaft cover.
Looking again, the missing bolt does not appear to be a mount of anything. The missing nut just tightens the collar around the steering shaft.
As for the rounded thing sitting on top, what is that?