Be aware that the force of an impact like the one to the back of our Mustang can travel through the car's entire body, especially in a unibody car. Check the whole car for ripples and waviness, paying close attention to the quarterpanels, sail panels and roof. Also, look for misalignment of the doors and body gaps. The Mustang had two small creases in the left quarter-panel that were a direct result of the hit to the rear. Ferre hammered them out while the chains were still attached to the rear of the car.