Does anyone know - with a pair of Neptune 60cm RIBs installed (in the 'standard/proper' position) - how much room there is between the back of the seats and the back of a 2017 SWB T6 with twin side-loaders (which I'm about to purchase)? I've asked companies who fit these RIBs, but no-one seems able to come up with the answer. I'm keen to know because - before I complete the purchase of the van, then get the work to fit the RIBs contracted - I want to make sure I've enough room to get a dog cage (or two?) built-in at the rear of the van. Thanks - in hope (and desperation!).