I've got a 55 Peugeot Expert - same van, different badge.
2 bikes go in, takes a bit of jiggling to get the second one in and get the doors shut without breaking the number plate.
I know of a mate that used to take his & his friends MXs bikes in his Dispatch (reliable van as well it was). They wouldnt have bar risers on so cant answer that one, but agree 2 should fit in.