Edelbrock part #2475 CH-6B Chrysler 6-pack intake manifold is designed for 440 c.i.d. Chrysler engines with 3x2-bbl. carbs, also fits 413 and 426 Wedge. #2475 is stock replacement/street legal part for 440 V8's with OEM 3x2-bbl. carbs; 1968-71. This manifold was original equipment on Chrysler 440 Six-Pack engines, Chrysler #P4529056. Will not fit 1962-64 Max Wedge heads. The Edelbrock CH-6B Chrysler 6-pack intake manifold is machined for the OEM 3x2-bbl 4-bolt carburetors.