Eibach US did say the springs are very similar to the ACS springs as they are done in conjunction. The main difference is just the spring rate.
Originally Posted by Poleposition
Im waiting. If the Eibach pro kit is consistent with its characteristics from the past as compared to H&R, it should be a comfortable option with slightly LESS of a drop than the H&R. I plan on running 21's and really want to see both options before making a decision.