1959 GMC 100 truck sways back and forth

[tom moore]

I just acquired a 1959 GMC 100 pickup truck. Steering it is a challenge. It wants to sway/rock back and forth and jumps and sways when I hit a bump. Someone installed a PS unit, new tranny, and 350 V8 in it. Everything is good but the steering is an issue.

What is it? tie rod ends? kinpgpins? I can get it on a lift Saturday and take a good look - but what should I look for? what kind of wear and what is the likely cause of it not tracking straight and swaying?

Bearings are snug and repacked. Thank you for your help looking froward to your help. thanks. tom

p.s. where is a good source for 1959 GMC truck owner manuals, repair manuals with good diagram and step by step instruction etc.