I'm ready to redo the susupension on my car, seems like billsteins and the st lowering shocks are the popular choice. For around 600 what would be my best setup for the car. And what do i have to do to revalve the shocks, can i do this myself? do i take it to a shop. If i go to a shop how expensive is it. I would like to drop the car 1.5 inches. Thanks for any feedback.