I just had the front W12 calipers,carriers, 385 discs from Guy - daviesbike - Many thanks.
I plan to make the front upgrade next weekend so why not change the the rears as well ? I m not very "technical" and wont be making the upgrades myself because of lack of knowledge etc

My plan is to find a suitable set that can go on the rear end of my D2 S8 FL 2001
Question is: will the rs6 c5 rear set work ? After my research on google I have only found a rs4 b7 rear brake upgrade on a D2 however I would prefer the slightly larger 335 disc that the rs6 uses.
What exact rs6 parts do I need to perform the above rear upgrade ?