IMPREZA WRX STi GDB EJ207 00/10-02/10 GT-STK GT2530KAI. Includes strengthened actuator. For model year code A~B. Turbo Size selected for Easy upgrading For those users who feel that just increasing boost levels on the stock turbo, this series of turbos is designed to offer the next level. With several turbo options available for each car model, a wide range of options is available dependant on the intended use of the vehicle. Ball Bearing Turbo used in all kits All turbos used in these kits are ball bearing type for sharp response. Ideal for users who want to prioritise drivability at lower and mid range speeds. Kit Contense * GT Series Turbo * Gaskets * Other Short Parts Necessary For Fitment. Includes strengthened actuator. For model year code A~B