Roberts installed an aftermarket Shelby hood and a Shelby front valance designed to integrate with a stock chrome front bumper — the Shelby
valance improves airflow to the A / C condenser and radiator, as well as adding hot looks.
«The revised shape of the window
improves the car's interior aerodynamics by promoting better
airflow for driver comfort while the new front
valance has a much closer identity with the original Mustang front - end while increasing the efficiency of
airflow to cool the engine,» Brock is quoted.