OER Parts offers a wide selection of Manifold Hardware for your 1974 Chevrolet Corvette. OER Parts offers 1974 Chevrolet Corvette Bolts, 1974 Chevrolet Corvette Exhaust Flanges, 1974 Chevrolet Corvette Extension Pipes, 1974 Chevrolet Corvette Header & Exhaust Manifold Paint, 1974 Chevrolet Corvette Header & Exhaust Manifold Wraps & Blankets, and 1974 Chevrolet Corvette Heat Risers.