Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block. Round Ports, 1.92 Inch logo each boot is designed to

each boot is designed to hold up to the elements and resist fading for a long life of good looks and protection

Bolt Circle 2 139

Front exhaust modification may be required to clear the front driveshaft

Balanced to OE specifications

For DRW models

Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block. Round Ports, 1.92 Inch logo each boot is designed toManufactured from high temperature steel core graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp load. Can be