Cj here is my neighbor and I'm responsible for talking him into this purchase, hahaha!
He will need a new steering wheel as well. Is there a rather standard wheel out there that accepts woodruff key? Right now there's a set of vice grips on the steering shaft boogering up the threads (PO's fault).
Manny of the steering wheels were similar during similar years, so pretty good chance, The Case uses a round cap and depending on the year will have different styles of spokes. Best way is to find your year on the chart in the Case forum and then use Google image to see pictures of that year tractor. Yours sounds like a 1973-1975