GIJoe4500,
Best bet is to look around here first off. Go to the search option at the top of this page and do a search for rear end. Also go to google to better yet www.dogpile.com and do a search for differential info, etc. There is a site called something like hot it works or www.howitworks.com I dont know the exact name, maybe that's it but someone on here should let you know.
Dogpile.com is a good search engine because it will do a wide variety of search engines such as, it will come up with finds from google, ask.com, it's own dog pile.com, yahoo, etc. Hard to explain but once you go there and look around you will see what I am talking about here.
There are very smart geezers here that can help you out too so if you ever have any questions then ask away... Just make sure you don't ask a question and get it answered and never come back to say thanks or nothing. (it happens all the time).

Welcom to CHR, good luck and stick around!