Thanks ecore8,
The second link was spot on,
Not sure if you know this, on the second link it shows a floor extention piece fitted. is this normal practice during manufacture.
So this piece could be removed from a van to give access to a foot well, for rear seats.
Sorry for all the questions, i havent got a van yet only at the reserch stage.
I dont think that the configuration i want can be bought as standard, so i will need to customise rear of van.
G