Welcome to Truck and Bus Forum,
tom.
Sometimes a sound but not pristine vehicle is more appealing than a 'perfect' ex-works condition one (IMO).
The 220 diesel is not a fireball - it
will pull your caravan, but not very quickly!
Be warned that people who tow caravans to shows with trucks incorporate a spring device to cushion the vertical movement of the ball - something to do with frame damage to the caravan by the stiff roadsprings of the truck. If you do decide to attend a show, look out for owners who have modified their hitches and get the details (most seem to be home-made).
See here:-
http://i24.photobucket.com/albums/c1...g?t=1386540164