was cleaning a big house this morning and I have to be honest, I was scared.... My ladder was stable overall but it was wobbling a bit maybe is because I gained weight lately Can someone give me an estimate on how much might cost me roughly to convert? I want a 500 litre water tank and RO system with other usual equipment. My van is 2008 Ford transit Van SWB. I remember I spoke to Broadex almost 2 years ago and they told they can do for £3850 or something like that and I thought it was bit too much. I will need a trolley system as well.