Motor mount for small block/big block Chevy motors. Requires a quantity of two for a complete set. Transplant your LS Series motor where an early conventional-style 3-bolt motor once was with conversion sets. These LS Series motor conversion plate and mount sets are designed with superior polyurethane mounts. polyurethane material is impervious to vehicle chemicals, road salt, and oils, outlasts rubber, and is virtually indestructible engineered to handle high horsepower and torque. For smooth-running strength at the track or on the road, use LS Series conversion sets.