You can use auto-logic to code the rear ride height with new leveling links. IMO I wouldn't just do the rear w/o lowering springs for the fronts. Call around to some indie shops they will have an auto-logic, if you're near the west/memorial area call Tanaka Motors and talk to Marcelo. He's got one but I bet he will say he's never heard of someone doing that but if you dig up all the info he'll play if you pay. Either way it's great indie shop I've been going too for years when I don't feel like doing my work. Honest guy, was a BMW master tech/shop foremen for many years. Lots local gear heads use his shop and you"ll always see some race cars there. Make sure you tell him Michael K w/e70/90/M3 sent you...he just bought a nice e70 35D too!