This is a long overdue update, but I did eventually trade in my '09 135i for an Imola Rot '04 M3 with SMG and Harmon Kardon stereo. Other than those everything else on the car was just standard fare, but that doesn't bother me one bit. I have owned the car for 5 months now and I don't regret making the trade. Only issue with it was a bad mirror which I replaced with the $4k given on top of my trade
. So far other than having the Inspection I done and SMG fluid flush and replacement of the mirror I have fitted Turner Motorsport black out kidney and fender grills, APEX ARC-8 wheels in Satin Black (18x9 and 18x10) along with Dunlop Direzza Z1 Star Spec tires (245/40/18 and 275/35/18). Uninstalled and waiting for a good day is one Cobra Imola Pro GT seat with VAC sidemounts and Macht Schnell floor mounts.