We recently completed this lovely T5.1 for one of our customers.
This van came to us with the u shaped seating already installed we then added an L-shape pod with a sink and a Domestic fridge/freezer. We had to extend and move the existing 12v electrics to suit the new unit and added 230v hook up and sockets.
We removed the fixed drivers window and replaced it with an opening window and added a window board and a small over head shelf along with some blue curtains to match the seating It's now a very practical and usable van and looks awesome!