OER Parts offers a wide selection of Manifold Hardware for your 1971 Chevrolet G30 Van. OER Parts offers 1971 Chevrolet G30 Van Bolts, 1971 Chevrolet G30 Van Exhaust Flanges, 1971 Chevrolet G30 Van Extension Pipes, 1971 Chevrolet G30 Van Header & Exhaust Manifold Paint, 1971 Chevrolet G30 Van Header & Exhaust Manifold Wraps & Blankets, and 1971 Chevrolet G30 Van Heat Risers.