One of the easiest ways to improve the looks and performance of your car is a body kit. Combined with their aerodynamic shape, light weight material, and sleek designs, where can you go wrong? Many kits such as the Mustang body kit come in all different brands and materials. Without body kits, F1 or drag racers would have a hard time maintaining their blistering speeds. Without rear spoilers, their rear ends would fly off the racing track.