I had a quick search and golde were used on many cars in the 70s so catching parts new should not be hard.
BMW, VW, Merc , Ford, Opel to name a few. Checking sites in USA, UK and Europe should get the parts your after, for example a cable kit is the same or universal throughout the range apparently. Ford Capri ran under the Mercury banner for some American reason. Good luck hunting the parts you need