These extremely high-quality reproduction manifolds have the correct casting numbers, pentastar logo, rust inhibited coating, and a ceramic high-heat coating that resist exhaust temperatures with a cast-iron appearance. The heat riser valve on the RH manifold is included and pre-installed. Set includes a pair of manifolds, gaskets, sleeve nuts, studs, hex nuts, head pipe bolts and marsden nuts. The sleeve nuts are stainless steel to prevent corrosion. The hardware kit is also available separately.