That rack on the axle looks pretty bad to me. I know it's been done, but that install is not pretty. It looks like there is a big plate welded to the axle for the mount. See if that can be repaired or removed and re-engineered.
The near shock mount looks like a universal bracket that has been mounted upside down and not even centered on the frame, and is mounted off to the side, rather than right in the middle (double shear).
I'd suggest measuring the frame for straightness before pulling any more off. Check where the axle centerline is too.