Our 1963-67 Chevy truck and GMC truckV-8 engine mount brackets are built to exceed the strength of the old style factory stamped motor mounts. Theseengine mounts bolt into the factory holes and allow you to convert to a V-8 or upgrade your old V-8 mount to the much more common Camaro, Chevelle and Nova motor mount pad. These brackets allow for use with HEI ignition setups. Can be used with both small blocks and big blocks. Limited lifetime warranty.