Because of this precision

Fits 1/8 NPT port

\nGenV Raceport BOV (Purple) TS-0204-1133

which prevents the engine from reaching its full potential

If the focus is more towards on performance

Xtreme Clutch Conversion kit - NISSAN RB - GM 26x28.6mm KNI20529-2E SL-02 Because of this precisionXtreme Motorsport 200mm twin plate The Xtreme 200mm Race Clutch was developed with a focus on those interested in a cost effective alternative compared to other race style clutch kits on the market but without having to compromise on quality. The 200mm Race Clutch Kits consist of a Billet Flywheel, Solid centered Ceramic Clutch Plates, Cover assembly, Thrust Bearing & Carrier or the Internal Concentric Slave Cylinder (CSC). Product Features: Torque