Slide Down Rear Window?

Whats this I hear about people putting in a complete slide down rear window in there Minis? Who makes them and where can I get one?

CR Laurence used to make them. all they have left is back stock. they arent in current catalogs.

the Part number for a mazda from an old catalog I have is PLW325. Any glass shop should be able to track this down for you, and see if any of the stock is left. If one shop says no, try another.
I checked thru my work and was able to get one for my chev dually, but when a friend checked thru his source for the same window, they said unavailable, so be persistant.