So I looked up Sachs Racing and am quite impressed with their technology. Not only is Sachs a tier one OEM, they also provide dampers for six Formula 1 teams including Ferrari, in addition to WRC, ALMS, etc...
I also looked up their Performance Coilover Line. They offer ride height and compression/rebound adjustability (20 levels). Interestingly they have kits for the regular 3 series but not for any of the M3s (E46, E92, etc.). Does anyone have insider info as for why?
In the mean time I will contact them to see if there will be anything coming up.