i'm looking at upgrading my brakes on my 2007 a3, to possibly something like the 312mm items. i know the hubs will need changing etc, would a complete hub and caliper from a 2.0 a3 model be a straight swap? i could then possibly get a set of carriers at a later date, or does anyone have a better idea as to a car to remove a 312mm kit from and that will fit on my 1.9 a3 tdi ? only looking for standard stuff, nothing like brembo's etc. i live close to a few breakers yards so the have several golfs and audis in, i'm just unsure as to what model the parts will be fitted too.