I would like to add a couple things about the Eibach Sportlines. It seems they have kind of a bad rap.
If you are going to run them, it is important to:
1. Have front & rear swaybars with good endlinks.
2. Use shocks & struts that can handle the amount of drop the Sportlines will give you.
I am currently running Sportlines with Eibach Pro-kit dampers in front and KW shocks in the rear. I also have factory front & rear swaybars. I have no problems with bottoming out, and I really like the ride and drop of the Sportline springs.