R32, Mk6 R, Audi S3 or Cupra R fronts all use the same sized calipers, discs and discs. Disc size is 345 x30mm for your reference.
A good place is this forum, I've seen some cracking deals on full front setups, just buy and bolt on (not quite so literally, but simpler compared to other setups).
I run stock Volkswagen discs and Ferodo pads up front, easily copes with a spirited B road session.