I used this on a SB Chrysler engine to convert to an Edelbrock Performer RPM Air Gap intake manifold. Edelbrock recommended a different gasket kit that did not come with end caps, o-ring, or manifold gasket. This kit is for you! I suggest applying Permatex copper spray to the underside of the gaskets to set them in place before installing the new manifold. Best Intake Gasket Kit for 340-360 Mopars!