Yeah, probably the Z4 sdrive35is DCT and other variants of the Z4 sdrive35i.
Or the Z8.
Or the 650i.
According to that website, the sdrive35is can do 0-60 faster than the M3.
2008 135i Montego Blue sport pkg, premium pkg, Logic 7 sound, iDrive/Nav
Mods completed: JB4+ & FBO || LSD || BMW-P suspension + F/R sway bars || 18" Breyton GTS-R || M3 front bushings || Vogtland camber plates || BMW-P rotors + Stoptech pads |||| Acquired, not installed: BMS WW Meth kit || Logic HVI intake || Mishimoto OCC |||| Shopping for: Summer tires