@epox, I take it you know what you are doing with regards to changing suspension right? I've not done it myself personally on my S3, and even I found it a piece of cake! It's pretty straight forward, just one bolt on either side of the car, 2x10mm bolts for the xenon height adjuster on the passenger side, the rest is the time consuming job of jacking the car up onto axle stands, taking the wheels off and using jacks to raise and lower the trailing arm to get access to the springs!