No matter what kind of motor mount you choose it is very important to support the bottom of the block as much as possible. Just like a house it need a solid foundation. If not the torque of the engine can twist the block and cause the side cover bolts to come loose, fall out or cause gasket failure. It is even possible to crack the block in extreme cases.
To help prevent this from happening this mount supports the motor plate much farther to the right side of the kart. It also has a much thicker top plate. There are many chassis, seats and adults that need the motor mounted farther to the right than many motor mounts are designed for. This mount provides the support for the motor in those situations. The motor angle can be either 8 or 15 degrees depending on how you mount the motor plate.