Bring my 73 dart swinger back to life.

Today I took out the steering column. I think I'm missing a few parts. This column is stock standard . The coupling was full of rust and dirt. You can see what is left. can I just soak this coupling in WD-40 then pack it with grease and buy the cover for it. And reuse it. Am I suppose to have a bearing, bearing support, spring and spring retainer. Can I get some input.
The shaft connected to the coupling, just clean and it will be OK. Right? :coffee2: