The only 'performance' discs that Brembo do as an OE fitment (other than replacement 2 piece stuff) is the 'max' range, sadly it's not available in either the gti 312 or r32 345 fitment

If you are dead set on Brembo (their regular stuff doesn't IMO offer any improvement over OE dealer discs) then consider the 'premium' range which come with a higher carbon content to the steel and painted bells and edges to protect against corrosion and some come with better cooling vanes thanks to the Brembo PVT utilisation

In your case Mike I'd definitely consider the 340x30 Audi TTS front disc, lighter than the 345 by nearly 2kg a side, MUCH better and bigger cooling vanes (PVT) and does away with the 2mm lip on the disc edge that the 345 disc gets when worn, cheaper too as I've just got a pair of Brembo 'premiums' for £102 delivered
