Fits directly to S14/S15 strut towers. Fits S13 strut towers if you add S13 top plate spacers sold separately. Limit Break coilover top plate upgrade for comp and pro coilovers & super widebody cars. These are the same top plates ran in Matt Fields Formula D s-chassis that are helping him get 70 degrees of steering angle by bringing the coilover upper mounting joint center to the FD legal limit (which is the 3 mounting bolt center's circle) along with the new super wide Limit Break front arm set, swaybar offset brackets, and KPI/Camber lockout adjustable coilover front lower mounts. Upgrade your MAX comp or pro coilovers (or other coilovers that have the same m6 pattern and 40mm OD PB housing) by purchaseing just the top plates/hardware itself ~ or ~ If your coilover does not match our mounting pattern yet still uses an 18mm ID ball jointYou can purchase both the top plate and pillowball housing with ball joint ~ Requires 60mm+ wide body fender and 75mm+ longer FLCA to use the extra top plate width without adding positive camber. ~ Requires cutting of the strut tower to use the extreme adjustment ~ Stainless socket set screws with class 8 flange nuts, Stainless flat head M6x1.0 bolts ~ 6061 half inch aluminum plate with copper anodized finish ~ Full camber/caster adjustability by 11 increment rotation X 6 increment slot = 66 possible settings