Trying to figure out what steering parts I need

[ncsurveyor]

The more I research it the more confused I get. I've got a 68 c10. I'm doing an ls swap and doing power steering. My engine has already has a power steering pump. I've ordered a rebuilt column from a 68 from Kev's Classics. I know I need a steering box, pitman arm and rag joint. What else? Specifically what i'm trying to figure out is what all components are involved in the steering shaft area. Is there an intermediate shaft between the rag joint and the column? What about the shaft between the rag joint and the steering box, is that a seperate part?
I apologize for my confusion, trying to learn as I go.

Thanks,
Phillip