i installed my eibach pro kit yesterday and had my car aligned this morning. man what a great product. just driving around town i can hardly tell the difference but when i opened it up on a curvy road my car came to life. i thought it handled good before but now it is the s***. the springs combined with new wheels and wider tires really made a big difference. if anyone is debating which springs to use, i say go with the Eibach. just my two cents