I just received a military surplus medical supply chest from Sportsman's Guide
today.  The measurements for front to back in the luggage rack were about
perfect and as it turns out, it does indeed fit well.

The chest is made of aluminum, so it's light and won't rust.  The gasket is
airtight and has 10 latches total.  In fact, when I got it, I couldn't open it
at first because there was a vacuum.  I had to pry it slightly to relieve the
internal low pressure.

There are some pics on my web page:

http://www.enter.net/~bloss/vw/bev.html

It was $40, but I think it'll work out well.  The olive drab might have to go
though.  :-)

-Karl

Karl and Kristina Bloss, Trexlertown, PA
'87 Westfalia Weekender  "Beverley" - 197K miles
http://www.enter.net/~bloss/vw/
PA/NJ Vanagon owner's mailing list: http://www.enter.net/~bloss/vw/pavanagon/