http://www.realoem.com/bmw/enUS/show...diagId=51_8381
These are parts 18 "Structural reinforcement panel" (F33 only), 16 "Torsion bar, front" (F32 F33 only)
So for Sedans you need a pair of "Torsion bar, front" 18 too, coupés only need the reinforcement panel.
http://www.realoem.com/bmw/enUS/show...diagId=51_8380
black V is part 16 "Diagonal brace, lower" here (ref 51647294929) + 17 "adapter plate" that are specific to convertibles.