This exhaust manifold is ideal for customers looking for a little better performance but does not want to convert to a traditional header. Features both larger inlet and outlet ports for increased flow over the original early versions used from 1963-1967. This manifold features a larger 2" outlet instead of the stock 1.75" which increases flow by 12.5% which in turn improves performance and economy. Cast in high strength ductile iron with early Ford part number and "Hi-Flow" prominent on the part when installed. Fits 170,200 and 250 Engines. Includes exhaust flange bolts, nuts, and washers. Sold individually