Just finished putting a new double din head unit into my Fiorino, which had a single in place. Removal was easy, then as you can see from the pics, I needed to cut away the plastic struts which supported the original head unit.
I cut these away a little bit at a time to ensure a tight fit with the new cage.
I fed a wire down behind the speakers to wire up to the cigarette lighter so the unit also powers up with the ignition, which is a lot more useful than I had imagined it being!
Next job is upgrading the standard door speaks and fitting a compact sub under the seat.