E46 Strut Tower Top Weld-in Reinforcement for Ground Control Camber PlatesAllows for easy and full range of adjustment of caster and camber with Ground Control Race camber plates(not pictured). Strut tower may require some flattening with a piece of wood and and a hammer to remove any previous "mushrooming". We recommend bolting these in flush to the strut tower and welding the perimeter, then grinding cutting out the strut tower with your tool of choice(band file, die grinder, etc.). We also recommend using the BMW factory