Abstract: An improved vehicle chassis for motor homes and busses is provided. According to the invention, the chassis has a front frame chassis subcomponent, a rear chassis subcomponent and a center floor rail system. Each subcomponent has contained within it the appropriate subcomponents associated with the chassis; the front subcomponent, for example, has a suspension unit and steering apparatus while the rear subcomponent has transmission, motor and suspension.The front and rear frame chassis subcomponents have longitudinally extending frame rails which connect to one another via a plurality of longitudinally extending floor rails and perpendicular steel plates found in the center floor rail system.The inventive device integrates the chassis and superstructure. Incorporating the superstructure into the chassis lowers vehicle height, and therefore, the center of gravity. This results in better handling and ride characteristics for the finished vehicle.