David,
The rear end is Jaguar from the XJ6, and it is similar to the XKE. You can search on-line, there are lots of sites detailing rear end service. You can also find Jag maintanance manuals at some bookstores. I also put a link on this site a while back that has an awesome Jag reference site by a guy named Kirby Palm. You can easily find it with a Google search.