Conversion gasket set is the English name for the bottom-end gasket set. It contains all of the gaskets below the head gasket, including block to transmission and Flywheel housing. This one is primarily for use on blocks with no tappet covers, such as pre-A+ 1300 and A+ 1300. It includes both types of timing cover and front plate gaskets, as shown in the photo. Does not include 13H2934 rear main oil seal, 12A1176 seals for the tappet cover bolts, or 12A1175 tappet cover seals, please order separately or see an alternate set. It takes a head set and a conversion set for a full engine rebuild.