I would point out that you should never never ever go near caravans with pressure washers - they blow the Sikkaflex out of the seams and then the van will indeed leak.

Buyers may want to know which series Carver Cascade it is - fitting a replacement series 2 is not hard, but a series 1 can be a nightmare to get all the nuts and bolts off because they are EXTERNAL combustion and the burners and stuff are in a metal box under the van.

Also, the 80% rule would indicate that the towcar should be over 1000 kg.

Having said that it does look nice, though.