Luggage/Boot rack

Hi,

I am planning to buy a boot/luggage rack for my 911 SC from 1982. I found a nice one which you can check out on

http://albums.photopoint.com/j/AlbumIndex?u=1449700&a=10884579


(You also find some Photos of my car there, special ferry Porsche edition)

I want to order it in black since the car has a black trim, however I have the follwing question: Is this an original accesorie? Did porsche have such racks or did they have others? On the net I have not found other suppliers who sell this, do you know of any?