The standard pressed steel actuator fitted to the Subaru's TD04 turbocharger is are easily forced open by exhaust gas

This center cap originally fits: JR10 (15")

Check out the Geomaster Front Drop Knuckles

Gen-V WG60 Actuator Collar

To complite your suspension upgrade be sure to check out the Lock kit for Mazda RX8

Clutch Kit - Xtreme Performance Heavy Duty Organic 560Nm 1100kg (30% inc.) KFD26002-1A Xtreme Performance The standard pressed steel actuatorXtreme Performance sprung organic kit 1A Recommended for: Street use in vehicles with minor engine modifications. Sprung organic clutch kits offer exceptional driveability for vehicles used daily but also have performance modifications. The sprung organic disc offers improved dampening which reduces the shock loading on the transmission. Specifications: Torque capacity 560Nm Clamp load 1100kg 30% Increased over standard Organic Friction Discs Heavy