Did this upgrade 2 1/2 years ago and it was one of the best upgrades I ever did. Handling changes were night and day. Really did change the whole car. It took me a long time to get them but I was able to get both front and wear eibach bars right before they ran out everywhere.
I have xdive with kw v3 and I don't think the're for xdrive. I keep breaking the sway bar links or break the sway bar tab on the coilover. I called KW direct and explained the situation, they said "we don't make coilovers for xdrive" I also don't think the sway bars are even sold as "for xdrive" on RWD.