Fits 1963-1979 Pontiac 326-455 V8. Oval Ports, 1.46 Inch x 1.93 Inch 2019 chevrolet corvette 9 High Grade steel bolts

9 High Grade steel bolts (equal in strength to American Grade 8)

Rails will have a Clear Anodized Finish and 3/8" NPT inlet/outlets

eight bowtie valve cover mini nuts (141-601

Proudly crafted in the USA

Fits 1963-1979 Pontiac 326-455 V8. Oval Ports, 1.46 Inch x 1.93 Inch 2019 chevrolet corvette 9 High Grade steel boltsManufactured 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