Rear Sliding Window & Gasket
OK, here's what worked for me:
http://www.jcwhitney.com/item.jhtml?ITEMID=20052&BQ=jcw2
You can get a FREE sample, the ph. # is on the link.
Install the gasket with the body panel side to the frame, and the glass side to the top. (It is a little bit of a PITA, because the roll has a natural curve in the wrong direction. Hot water and/or Florida sun helps.) It is next to impossible to do with the top on, as the roll bar is in the way in the top corners.
Also, the slider that Collins Bros. sells for $299.95 is available from 4Wheel Parts, for $70 - $80. It's made by C.R. Laurence, here's a link with info and part #'s. (You will need to give them the numbers, as the salesperson I spoke with didn't know that they were available.)
Type in "Jeep Slider" in the search @ this link for dimensions, etc.:
http://www.crlaurence.com/apps/Search/ProductSearch.asp
CRL Duo-Vent Four Panel Slider with Clear Glass for 1981-March 1983 Jeep Scrambler TSW1852
CRL Duo-Vent Four Panel Slider for March 1983-1986 Jeep Scrambler TSW1859
I hope this helps.