I have a set of Brand New Renault Megane R26 Brembo 4 Pot Calipers in Silver. They are radial mounted (like Porsche Brembos) so are easily adapted to any Vehicle/Disc combo. They also come with Brand New standard Renault Pads (About £90)
The Megane comes with 312mmx28mm Discs so is more or less the same as VW 312mm (VW are 25mm wide so thats not an issue). I have also heard of a few people fitting these with the 305mm 4 Stud Discs, and I can't see a problem with them being used on 288mm Discs.
As they are off a RenaultSport car, there is a massive range of Pads available for Track or Fast Road.
The ones I am selling are perfect. Those pictured are actually the other set that I am keeping, which have a few small marks.
Price is £400 inc UK Postage or they can be collected from Barnsley, South Yorks (Can meet within reason)
If required I can measure the distance between the mounting holes.
I think JordyGTI has a mate who can knock mounting brackets up if you needed some making.
Any questions please ask.