i have a 8 foot awning for sale.. made by A&E Dometic.  clamps to the
vanagon/bus raingutter.  does not interfere w/ the westy poptop..   i just ordered
the brand new mounting kit for this ($82.00) so its complete w/ everything you
need to mount this to your vanagon or westy.  its a case awning, then not in
use, everything retracts and stores in the aliminum case which clamps to your
raingutter.

heres a pic..  the catalina is the newer version, the trans-awn is the same
thing more or less.    the color is tan/white.

http://www.dometicusa.com/awnings.php?product=38

i can ship this...

pmail me if interested..

chris