Thanks Everyone! It appears I have opened a real can of worms reguarding weights, legalities, etc. when all I really wanted to know was whether there is a need to add airbags or whatever to enable my van to be levelled while being towed. I put our van over the weighbridge at Yandinda fully loaded with everything for our trip to Lightning Ridge then Birdsville in May '09 and I had a van weight of 3,520 kg and a tow ball weight of 320kg. This included 30 bottles of Penfolds Cab Sav (40kg) so as you can see we are light weight travellers. Probably due to our having spent 4 years doing the rough stuff with an Odyssey offroad camper trailer. Anyway we have ordered a new 200 Series LE Anniversary Cruiser and will pick it up Tuesday. If the van doesn't ride level behind we will add Poly airbags as I don't want to change the original Toyota steering/suspension any more than I have to. Anyway thanks again everyone and have a great Xmas. We'll let you know how things go.