AFR Eliminator Street Strip Intake Manifold Square Bore Small Block Chevy 4414MEDWH Primary tube sizes starting at EQ TCC294A Primary tube sizes starting at 2" through 2 1 2" with 3 1 2" through 5" collectorsPatriot Exhaust products continue to offer the best value for the dollar of any brand in the industry 1968 1968 Jeep J 3600 This complete commitment to performance has enabled Airflow Research's cylinder heads to find themselves on the fastest race cars and the most powerful street machines in the country For over thirty years Airflow Research has been defining technological leadership in cylinder head manufacturing and flow dynamics