Axle surly has a forward bow in it. May be possible to press it back straight or may be easier to find another.
Depending on how worn the king pin bores are in the spindles you may be (likely) looking for better spindles anyhow, and they often come on a good axle beam.

Springs are worn, I don’t know about grinding them if that’s advisable or not.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-