I assume we that you are looking for a conversion rather than a California. We purchased a new van and had it converted. I have said all this before. We went down the conversion route as the California did, and does not, work for us. We wanted more space, so LWB, then more insulation for winter and do not like pop tops, so high top, as we go away for longer stretches the small campinggaz bottles do not work for us and are not good if it gets too cold, so we went LPG in an underslung 15L tank, then we wanted hot water, a shower and toilet. This would all fit in a big white but we wanted a VW T6 sized van. We looked for over a year at converters and we saw a load of rubbish with a very few, in my opinion, competent providers. Most of these would only provide "their design" with minor variations. We also wanted full VW warranty on the vehicle plus warranty on the conversion. We ended up with Autohaus in Minehead. We have everything we requested including VW warranty, conversion warranty and excellent after sales support. They did raise the odd eyebrow at some of our requests but we worked together to get everything included all in a brand new van. What we have works for us while the California did not. Give Tony and Chris a call, even better go and visit.