Designed for 1968-87 429/460 Fords. Ideal for high-performance street and drag racing. Over 500+ hp at 6500 rpm (+30 hp more than ported factory heads) and 525+ ft-lbs. of torque at 4500 rpm with the Performer RPM Total Power Package®. Intake ports can be opened up to match Victor manifolds #2965 and #2966. NHRA-accepted for Super Stock only.