Hello. This my first post. ( I currently have a Fiat 500L MPW, and have had 4 previous Fiats ) I am currently looking into buying a Weinsberg Carabus 600k 2020 model campervan on a Fiat Ducato. Ideally I would like to replace the single seat to a double passenger seat to take the seated belts from 4 to 5 which also matches the number of births. The seats are widely available as well as the swivel bracket for this seat ( the one I have picked is from a company called Custom Design) Does anyone have experience in doing this and any related advice. Much appreciated in advance.