Fiat Dukato as a camper and everyday car?

Hello, we are considering the purchase of a box van, which we can use for driving as well as as as a camper. I would build the equipment myself, so that it can be expanded quickly, if necessary. There are many box vans and combinations of different manufacturers, where almost all have an internal loading space height of approx. 137cm, at the normal roof of course. How high is the Fiat Ducato in the interior of the cargo space? Is that enough to stand bent? Thank you for all the suggestions…