Last week, someone on one of the lists was trying to find a used Westfalia 
propane tank. Not having one, I deleted the message, but if you're still 
out there, I just stumbled on the following ad.  It's a west coast number, 
I think. Haven't called it; this is all I know.

>PROPANE for underneath VW camper, 5" diameter X 24" long, incl
>regulator, etc, cost $250, sell $100  (714) 544-2634   

-Ron Salmon