J. reynolds wrote:

"One alternative to the rear tank is a rear carrier with gerry cans of gas
(or balast like water) and move the spare form the rear to the front -
Air lift springs would likely be needed then."

------------------ reply ---------------------------

I make a gerry can and tire carrier for the rear door of the vanagon.  Five
gallon gas can with gas weighs 45 lbs and tire weighs about 30 lbs.  Carrier
weighs about 18 lbs.

See pictures  at:

http://www.telusplanet.net/public/gary2a/rack/ladder.htm

Gary Lee
Calgary