Help to find a distributor cap

I’m need help in trying to find a Ducelier distributor cap for a mk 1 golf 1300 1980 part number from VW heritage is 036905207 hope someone can help find one or no of a replacement thanks in advance 

http://www.golfmk1.co.uk/Items.php?group=ENGINEBAY&cat=ALL
Third item down the page….

Thank you il be ordering that tomorrow do u sell lots of discontinued stuff.