Here's a Samba thread on the process:

http://www.thesamba.com/vw/forum/viewtopic.php?t=283728&highlight=jalousie

If the link does not work just search on "jalousie" or "louvered" in the Vanagon forum.  I passed on one of these windows in a junkyard a couple of years ago because of parts priorities and could now kick myself.  Good luck!

Stephen

On Saturday, October 19, 2013 2:14 PM, Bryan Feddish <uprightbassghost@HOTMAIL.COM> wrote:
 
I scored a really nice jalousy (sp?) window from a bay and I know these can be modified to fit my 83 Westy, Does anyone know what is involved in getting it to fit?  There is a late 80’s van here with one and the window has been cut down a bit but their window looks smaller than mine.

Thanks,
Bryan