On Sat, Oct 10, 2009 at 7:44 PM, Chris S <szpejankowski@gmail.com> wrote:
> I found a pair of rear vent windows from an 89 Vanagon. �Is this
> considered a good upgrade for an 84 Westy?

This would make the air inside Your van change better. These vents are
for venting out the inside air in order to get fresh in from the
front. Mine is 1990 syncro with rear vents and the original vents in
front doors closed:
http://picasaweb.google.com/janne.ruohomaki/Welle#5358240469555664130

I would bet that if You drive Your Westy in humid or cold environment
and with several people travelling in the van during years You would
get less rusted seams inside the van. Thats because less condensed
water in cold metal surfaces. And anyways if You drive in some desert
You would like to change the air in whole van, not just front of it.

Also I would assume that in cold environments You migh get rust pretty
easily on the places there the vent in that picture above leads to.
Thats because warm moist air from inside is being constantly sucked
through those channels. What powers that suction is forward movement
of the van that causes low pressure near the door hinges. Rear window
wents are more resistant to this. But they also leak way more heat
outside when van is parked.