Rear differential repair- parts recommendations please

[billschroeder5842]

Hey all,

I have a slow leak in my differential that is starting to bug me. It is only a drop or two a month, but it is still there. I crawl under the car weekly and wipe to stay ahead of it. It is located around the support strut rod.

I'm going to take a stab at trying to do the repair myself. While apart I want to make the proper preventative maintenance/upgrades as the car has about 90k on it.

So...
What is the better brand of U joints to install?
What is a better set of rear end bushing kits to make replacements?
What is the correct differential fluid to add?

Thanks!