PROTOform has developed Anti-Tuck Body Stiffeners to help remedy this frustrating problem. Made from super-stiff lexan®, the one-piece stiffener fastens inside the rear of your 190mm touring car body with three simple screws & nuts. The pieces are custom formed to fit the curvature of the lower rear fenders for a perfect fit. Not only will this system virtually eliminate body tuck, but the added rigidity will also aid unwanted fluttering or deflection of the rear of the race body at high speeds. Weighing in at only 4.5 grams, changing the weight bias or center of gravity of your car is minimized. Each set comes with two Anti-Tuck Body Stiffeners, mounting hardware and a PROTOform decal sheet.
Seems like a pretty good idea to me!