What were you upgrading FROM suspension-wise?
I ask because I'm in the same boat with the control arms/shocks/springs versus LSD. I've heard arguments for both sides. What was your reasoning for doing this before the LSD and rear subframe stuff?
'09 E93 M3 6MT, ESS VT2-650, UUC/Corsa, MS X-pipe, H&R sports, Volk TE37SL 18x9.5+22f and 18x11+34r, Spec TwinDisc P-trim, UCP
'09 Z4 sDrive35i DCT, JB4, DCI