This Auto Specialties VG30 under drive pulley has been proven to add huge Hp and low end torque to both the Nissan 300zx Twin Turbo and the N/A. On the Twin Turbos it helps the engine rev up quicker which makes for a quicker spool up on the turbos and on the N/A it also helps the engine rev up quicker for better low end grunt.
** Includes Genuine Nissan Belts **
The HI OD water pump pulley is recommended to be purchased at the same time. The HI pulley can be found HERE