I don't know exactly when, but at some point, OBS trucks started being offered with power rear windows. I've been wondering how much work it would take to get power rear windows retrofitted onto an older truck; it'd be nice to be able to open all of the windows from the driver's seat if needed.
I looked around trying to find out when they started offering it, and I noticed on O'Reilly's site that, for manual windows, they were giving the same part number for front and rear on each side.
http://www.oreillyauto.com/site/c/s...ow&year=1996&make=Ford&model=F-350&vi=5007048 (not sure if the link will work from another computer)
I did the search using a '96 F-350 as my source, hoping that they were offering the power rear windows by then and I could look up by part number. Please not ethat this is not verified in any way, so I would suggest doing further research before pulling the trigger. If someone else has done it, so much the better