I went to look at the Lo-boy today. It looks to be all original.
6 Volt positive ground, head lights and tail light.
All yellow paint down to the rust.
It will need the radiator cleaned out and some new items.
Exhaust system from manifold back.
Steering support casting (the thing the steering column goes through by the wheel)
The steering will need to be tighten up too. About a 1/8 of a turn slop both ways, and a little leak
A new battery box.
The left brake doesn't grab as good as the right. Could just be an adjustment, maybe...
The 60" IH deck is rotted out pretty bad, but the dozer blade has the upper extension