I wouldn't buy anything from Yahoo if you GAVE me the money.
Any decent import place should have the resources to track an Every down for you, but fact of the matter is that when you consider the age of the van, rust, shipping, compliancing, and all the rest of the bollocks it would probably work out more cost efficient to either modify an Aussie delivered SuperCarry or late model Carry.
For a start though I would try J-Spec or Prestige Motorsport - they seem to be the most well reknowned importers.