Ok word has gone round that B6/B7 uprights are bolt on for B5 A4. Advantages over B5 S4 uprights include mainly include weight. Who has actually done this? If so, to what year/model/engined car? What needed to be done (ie write up)? What other parts are required? Wheel bearings, hubs, driveshafts???? What brakes 'kits' are you able to bolt on as a result? Are you able to bolt on anything B5 S4 compatible or B6 A4 compatible?