I was looking on a few websites at KW coilovers and they same part is listed for both the saloon and the avant. Are both compatible? Also some listed the A4/S4/RS4 all as the same. I know the V6 will be a lot heavier than the 1.8T but wonder if you could adjust the damping on the V3s to adjust for the less weight? Just think it would be good to have some that fit more cars for if selling on etc.