Hey all,
I currently have K-Sports for sale. PM me for a price, I'm in Bris. With the knocking sound in the rear I used 6mm high tensile automotive rubber at the top of the strut. Stopped the sound totally. Yes you will need a rear camber kit if you are going to lower. I went down over 3 inches, adjusted the damper and the ride was excellent.
Cheers,
Luke