Upgrading the diffs

[Underground]

I just order the Maximizer diffs, Integy cases, and collars. Now I want to completley build new diff cases for the front and rear. I am waiting on these to also install my new CVDs. My goal is to take the old diff cases and CVDs and put them on the shelf intact. My question is what other parts will I need to accomplish this. Any links would help out greatly. I am still a noob when it comes to the diffs.

Thanks,