Based on performer RPM-series with unique air gap, air gap cooler and denser mixture for more power, designed for 1500 to 6500 RPM street-driven power, dual-plane high-rise intake with 180 degree firing order, produces incredible top-end horsepower, retains good throttle response and acceleration, includes standard oil fill, PCV, a/c accessories bosses, not for exhaust-heat chokes - no exhaust crossover