heritage do a complete rebuild kit for both sides for £72https://www.vwheritage.com/171698700-re ... th-a-brake
they dont come with handbrake cable but i would have thought the cables should be ok.
your drums are probably very scored or even warped as they would have gotten pretty hot.
the liners on the shoes arent going to be pretty either and may even have the liner come away from the shoe.
yo might get away with leaving the wheel cylinders but then again while you have it apart it makes sense to change it all