Called Eibach last week and they were still in R&D. Today was told they are ready, but only drop the car about one inch. Price is around 375.00 for the set. Would have liked to have about a two inch drop. Can anyone tell me if the lowering spring caps can work with aftermarket springs and what would the drop be? John BTW--tommorrow is dyno day for the new exhaust, hoping for 500hp at the wheels.