Hi After quite a few months scouring ebay and the small ads I have managed to gather together all the bits I need for my conversion of the brakes on my B5 1.8T Quattro to upgrade it to B6 S4 spec. All the parts are hopefully being fitted tomorrow. First on my shopping list was a set of B5 S4 uprights, which look like this: I bought a set 2nd hand of SRS for about 130 quid if I remember. They were a bit manky and both wheel bearing were goosed but they came with 2 brand new ABS sensors. I cleaned them up and hammerited them and bought 2 new wheel bearing kits (about 30 quid each) ready for the transfer. these are the painted uprights and this is one of the bearing kits Finding 2nd hand B6 S4 calipers was a nightmare. I toyed with the idea of buying new (at around £150 each) but then you would also need to buy the carriers which are audi only and £150 each also. So looking at abill of 600 quid put me off and I decided to wait for 2nd hand. In the meantime I got some brand new 345mm B6 S4 front discs and pads. (around 45 quid a disc and about the same for pads from All German Parts in Leeds who are great) Here is one of the discs with a 10p for scale and the pads too Then finally I spotted some calipers (with carriers) on ebay which were in a set with the B6 S4 rear calipers (with carriers) also and front and rear part worn discs and pads. The back pads were FUBAR but the discs were great. So I bought the lot for just over 350 quid which gave me what would have cost me 600 quid new and I also got effectively free rear B6 S4 calipers and carriers (which I didn't need, so I sold on) and a spare set of front discs and pads and rear 300mm discs too! Bargain! Tha calipers cleaned up well with a stiff brush and some detergent and once the **** and surface corrosion was wirebrushed off I painted them blue (just to be different!) Here you see the front calipers and carriers separated. How Audi can charge 150 quid for what is essentially a lump of metal I don't know! I may upgrade the front brake hoses to braideds, but thought I would stick to OEM for now. I then got some rear caliper brackets from Trig off SRS and he also sent me some extended rear brake hoses as well for about 50 quid for the lot. All I needed now was a set of B5 S4 facelift rear calipers which I finally sourced from the states (great cos less corrosion). They are en route to me now. So along with the 300mm back discs I have everything I need except rear pads which I will get when the calipers arrive. rear calipers (which were £100) and back discs: The fronts are being fitted tomorrow (along with DOT5.1 fluid) and the rears will be done as soon as the calipers arrive. I should then have 345mm on the front and 300mm on the back instead of 288mm on the front and I think 240mm on the back so I would expect it to stop A LOT quicker!