Originally Posted by kaiv
If you absolutely must then just get a set of Eibach springs (very mild drop like .6 in) and camber plates of your choice and save yourself ~$600. Oh but it's not adjustable? Again it's pointless to have threaded collars to go low on stock dampers.
BMW does a pretty good job of balancing the car from the factory. Not sure why you need height adjustability for an increase in performance. If you are gutting the car or taking stuff out and need to adjust the corner weights...you should be well beyond the OEM suspension in terms of capability anyway.
I'm on the Dinan stage 2 for purely warranty reasons. After I hit 50k I'll be shopping for a nice coilover setup.