Front Control Arm Bushing (FCAB), BMW - E85/E86 Z4M - goes in the "lollipop" to supposedly improve some handling due to the offset. It moves the front wheel in the wheel well (can't remember if forward or backward) that looks weird, to me.
The top strut mount can also be upgraded with a later E90 or Z4 mount (along with reinforcement plates) that drops the car ~10 mm in front.
Here's mine - 2006 ZHP coupe with 60k miles:
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2015 BMW 228i in EstorilBlau II Metallic / Terra Dakota Leather - 6-speed manual, M Sport Package, Cold Weather Package, Lighting Package, Premium Package, Harman Kardon premium sound, Anti-theft alarm system, Blue Metallic Matt Accent Moldings, Aluminum Hexagon Interior Strips, Anthracite Headlining