Up for sale is the complete set of shocks/ springs off my 335i msport.
my car is an 03/13 build and the suspension has 4k miles on it.
This is great to have as a spare set incase you get into an accident that involved suspension damage, as for modding it will be a marginal improvement over stock non-sport. You still might need the sway bar as well to make it a complete sport set.