which got me to looking at some web pages that sell led 'bulbs'
and
there was this pretty neat web page referenced ...

http://www.sylvania.com/auto/carapp/

so you can select Volkswagen, and your year, and then the model
(Vanagon, of course),
and it'll tell you the sylvania/osram replacement product number.

interestingly enough, they have FOUR replacement headlight bulbs
for the rectangular headlights! :)

joel