Rear End *wolf whistle*

[mechanixman]

I recently stumbled across an article talking about a Gleason differential.
Here it is:
http://members.rennlist.com/951_racerx/ps84gleason.html

A quick search showed that they came from the factory on late model firebirds, camaros and miatas.
Other names would be a Zexel differential, or a Torsen Diff.

I'm really intrigued by this and I kind of want to see if I can put something like this in my truck. Does anyone have any more info or tips on this type of rear end?

Thanks,