In addition to the above, also great source for parts- Chinese to a German depending on price point. All sell all brake components and upgrade kits... I personally like to call when I have Qs, ( vs emailing). Hey all have awesome tech support lines/ staff that can help you identify correct parts to fit your setup.
https://www.shop.kaddieshack.com/main.sc
..and original BW - salvage VW yard. Used and new parts.(Victorville, CA)
Happy shopping