Originally planned as a concept car, Porsche decided that a production 918 would demonstrate their advancements in hybrid technology. The power in the 918 comes from three different power systems working together. Sitting behind the driver is the main engine, a 4.6 liter V-8. Next, there is a 156 bhp electric motor mounted over the rear axle. Finally, there is a 129 bhp electric motor for additional power to drive the front wheels. The weight of these power units is distributed 43/57% front to rear. Kit features detailed motors and engine, open or closed top, and position able front wheels.