Cost: It will cost you the same if 1) your stealer rebuilds/replaces one LAD shock or 2) you buy all new non LAD shocks and springs and do the labor yourself. I chose the latter, and have had no regrets. Used HD bilstein with new OEM non LAD springs. Also takes LAD elimination kit. I got everything through bavarian for under $600. The hardest part is getting the rear seats out. E-mail me with detailed questions as it can get lengthy, or search the archives. There has been lots posted on this. Can some one help me as to how to conver my 750il rear hydraulic suspension to standard as the system is leaking slightly and I was told it could cost a bomb to repair.