Hi guys I'm new in the grupo. Im in Mozambique and im building a defender using a disco 1 automatic chassis, auto box ,disco1 floor, seats,steering column,switches and steering, mercedes m113 5.0 v8 engine, defender 110 double cab cut to a cab and half to fit the disco 1 chassis of 100". My worry is can the automatic box handle the power of the merc engine? I need some light on this please