Replacing steering column on 66 Dart - questions

Hello,

I'm replacing the steering column on my 66 Dart 270 Convertible and want to make sure I do it right. Looks to be a fairly simple job, but I've never done it before. A couple questions...
1. Should I lube anything while I'm at it and if so how/where?
2. There is a square-ish box near the end of the column that looks to be lube related. What is it and what is it lubing?
3. To center the steering wheel it looks like I need to slide the steering column onto the shaft of the steering gear in the proper position. Are there any other ways to center the steering wheel (I'm thinking not)?
Thanks!