I've got one here you can have for the cost of sending it Andrew but I'm fairly certain it has two holes cut out of it for the fitting of aftermarket ICE purposes.
Fairly likely someone on here will have a complete one, but it's there if you need it.
I’ve been contacted by a Fastback owner here in France who is looking for a rear parcel shelf.. pretty rare item I would expect, but does anyone have one for sale?