Edelbrock part #7798 is a Valley Cover Plate for Chrysler "RB" Block Engines that is Required when using our #77919-#77929 Edelbrock Victor Series Cylinder Heads. The Extended Flanges on these Heads make it Impossible to use the OEM Steel One-Piece Intake Gasket / Valley Cover. This kit contains all the necessary parts to replace the stock gasket pieces. 8.61" wide