Dear to my heart.  The system was a Fuel Cell lined box that was fitted to 
the roof rack, yep it was a mutha to fill but gravity fed to fill the real
tank when it ran dry.  Simple, worked for the desert 440Magnum powered
Dodge 4WD SWB van that I saw.  I bet the tank didn't know what kind of van
it sat on either.  Of course a couple of wedge plastic fuel containers
would do the trick too.

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         ___  / __   __/   ____/         Al Knoll HP Performance Technology /
        /    /      /     /             Center    Roseville, CA, USA 95747 /
       _____/      /     /             916.785.5317    (Telnet 785-5317)  /
      /           /     /             email:  alf@hpptc44.rose.hp.com    /
   __/         __/   ______/         ___________________________________/