I've read a few threads about people upgrading the B6 to S4 brakes and this got me very interested as a next project after recently installing the Kw V2 coilovers. I have the 1.9 TDi with the 288mmx25mm brake discs and as I understand it you can upgrade these to the B5 or B6 S4 brakes with the correct carriers and calipers? Do any of the other cars in the VAG family have the same parts? I heard that the MKIV R32 may have suitable parts? For the people that have done this upgrade, where did you get hold of your parts from? I assume alot of people got them second hand? My plan was to get a set second hand and probably have the calipers powder coated and put in a new set of seals and possibly buy new discs and pads depending on condition. Would be interested to hear anybody that has experience of doing this upgrade, if it was worth it. I am interested in upgrading the brake lines at the same time and moving to DOT 5.1. Anybody know of anybody parting with a set of S4 brakes?