you dont want to keep the stock shocks with lowered springs. you can, but the shocks will wear out a lot faster. so you would inevitably have to replace them. thus costing you a 2nd installation charge. might as well do it all at once and save some cash.
If you are interested in the Eibach/Koni set up.... contact Gavin@MMW. I bought my set up from him and it has been great. Plus, he is the man. one of the best mods I have ever done to my car. Makes it a lot more fun to drive. and looks good, especially with my Avant Garde's....that Gavin also hooked me up with.
2006 330i |premium package | Sports package | BMS Power Box | AA Tune | K&N Drop in | Charcoal Delete | Mforce Design Air Scoops | MMW CS Exhaust w/ second cat delete | Resonator Delete | Eibach Pro-kit | Koni Yellows | Mtec fogs | Mtec v2 Angel eyes | M3 Tri-stitched steering wheel | BMW Strut Bar | 19" Avant Garde M310's | Cooper Zeon 2xs | OEM Blacklines | WTB: Dinan High Flow Throttle Body