The
cars in both series will feature an additional forward roof bar and a
center roof support bar that will intersect near the front center of
the roll cage. This addition comes following extensive testing at the
NASCAR research and development center in Concord.
NASCAR
spokesman Kerry Tharp said the intent was to strengthen the top front
area of the roll cage in the event of a car rolling over. The change
can be made to cars this year but is not mandatory until 2013.