I am in contact with Roy Lock again, who has a lot of information regarding Golde Tops. He said last night that the cables are available again. Someone is making them again and he sent me the contact information. This is through a Porche source, but it is my understanding that these cables fit any Golde Top. NLA Parts is marketing them. You can also search their website for other Golde Top parts they might have. Here is the link.
Some time back I posted a link to a VW company in England that stocks a lot of parts that also fit our Golde Tops. That link no longer works, but their main link does. You can search their website to see what they might have or email them. Here is the link.