I know this thread is pretty old but thought I'd post some pics of my square body I just picked up it has a roll down back window, not sure of the brand but it sounds like I have a pretty rare find for my dually project!
[URL=
wn/IMG_20130920_174944_319.jpg.html]
[/URL]
[url=wn/IMG_20130920_rear%20window%20174932_643.jpg.
html:2ydlgwja" target="_blank" rel="nofollow">
html:2ydlgwja]
[url=wn/IMG_20130920_174921_909.jpg.
html:2ydlgwja" target="_blank" rel="nofollow">
html:2ydlgwja]