the front engine powers the rear wheels and the engine under the bed powers the front. you can run the just the front engine or both at the same time. the left pedal is the front engine's pedal, so when your just running it, you keep your on the left.
as far as the paint, most of the work was done by the previous owner(aside from the lack of bumper removal, its quite nice) and is mechanically sound. we have basically just maintained it, and made some minor repairs