Hi Dave,

Stock A14 clutches are rated at 361 kg clamping force, and are good for maybe 100 ft. lbs of torque. If your engine puts out 300 hp at 5000 rpm it will exceed the torque rating by 3x. The Nismo A14 clutch doubles the clamping force but it still won't handle 300 ft lbs torque, so we recommend using the 215mm SR20 clutch cover. Don't know if it will fit in your transmission case. You could also use a racing 200mm cover and the Pulsar disk which works with the A14 (most 200mm clutches won't be strong enough for 300 ft lbs of torque). More info is at SR20 Clutch on A-series Flywheel