The rear body mount was redesigned to better support larger bodies, and the chassis design allows room to mount the motor in front of or behind the rear axle. The kit includes everything you need to build a rolling chassis, including a fiberglass chassis kit, spring type front suspension, stainless steel rear axle with ball diff, adjustable body mounts, front bumper, 48 pitch gears, spec racing tires, steering linkage and a clear lexan body with window masks and clear lexan accessory engine parts for body details.