Bav auto springs...
You're going to need the Bilstein sport shocks with the short throw. Otherwise you're going to bottom the shock out. Did you order new shocks?
BTW - if you ARE going down this route ($200 for springs, $400 for shocks), better to buy the Sachs kit.
If you don't plan to swap shocks, the suggestion to get the M-tech springs is muuuuch better. You are not going to like just the Bav auto springs in front. And it will ride like crap as it bottoms out the shock.
Just ask Martin...his suspension sucks. Guess what he has. 
Jeff
Bellevue WA
90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
86 Porsche 951 - Track Toy