Just interested to see if anyone has done any polybusing on the B6 A4? I have a 2.5 Quattro Avant - the front has started knocking slightly - instead of replacing the arms.etc - I am wanting to polybush to stiffen things up a little. Only problem is - I cant find any items out there for the B6 Quattro - all powerflex list are items for the B5 models. Would items from the B5 / Passat B5 fit the upper suspension arms / anti roll bar.etc? Many thanks!