With the help of
saga boy, I managed to get an Alpina trunk spoiler and recently put it on. It really suits the shape of the F30.
I put a new 3D Design front lip on and also debadged the trunk.
I noticed that the steering will sometimes have a intermittent rubbing feeling when the steering wheel is turned to 11 or 1 o'clock position. No clicking or other feedback, just some noise.