Impressive horsepower and torque gains on engines running modified and ported cylinder heads or intakes with larger throttle bodiesGreat performance part for racing and for those that want to head to the track on the weekend3'' tall billet aluminum for M8 throttle body bolt pattern4'' diameter opening with an internal taper down to 2.4''ID matched to 62 mm throttle bodiesIncludes gasket and hardwareMade in the USA