Not sure. Does anyone have any Italian friends they can ask?
Something else that was posted recently on the forum was a Panda tent. I can't remember who has one. It's a tent that is designed to attach to the Panda when the rear hatch is open. It allows you to camp and use the car for storage. Very cool indeed. I've been searching the interweb thingy for one but I can't find any details.
Van extensions do turn up on Ebay, best bet is German Ebay though.
Steve, persevere with the tent, they are rare but do turn up (I believe they were given away at the launch of the Mk 2 Panda in 1986). Mine came from Ebay via (I didn't know when I bid though) Ricambio in Surrey, which is were I get all my 'urgent' Fiat bits. I personally can't fault these guys www.ricambio.co.uk
The tents were also available for the Uno, as I remember seeing one in someone's garden in about 1988 on my paper round