If you want extra fuel in a Mk1, I have an aluminum tank which fits against the rear of the luggage compartment. They were used in conjunction with the round tanks.

It can be for sale.:-) 

BenT
sent from my electronic leash

> On Mar 14, 2014, at 9:18 AM, Daniel O Stevens <dosteven@SYR.EDU> wrote:
> 
> And here I thought you were talking about the rare ACV Spare tire auxiliary fuel tanks sold for VW rabbits in the early 80s. 
> I've seen an ACV spare fuel tank or BMW once while searching for my ACV spare fuel tanks. 
> The small gas cans that fit inside the rims are available on Fleabay most of the time.. about $250ish. 
> But you may run into a problem as the Vanagon shifter box comes down into the wheel center a little. Some clearance may be needed.
> 
>