Modified stock car racing

Modified stock car racing, also known as Modified racing or Modified, is a type of auto racing that involves purposely-built cars simultaneously racing against each other on oval tracks. First established in the United States after the end of World War II, this type of racing was early-on characterized by its participants' modification of passenger cars in pursuit of higher speeds, hence the current name.

There are many sanctioning bodies for modifieds, each specifying different body styles and engine sizes.

Modified racing began as race drivers modified their cars to gain a competitive advantage over their fellow competitors. What started out as minor modifications to the cars has now grown to the point that some modified classes are no longer based on any current production vehicles. NASCAR was instrumental in modified racing's beginnings.

Some of NASCAR's pioneers were veteran modified racers long before NASCAR's inception in 1949. As time progressed, modifieds grew away from "Strictly Stock" or "Stock Cars", and became akin to both stock cars, and open-wheel cars. Today's SuperModifieds have more in common with Indy cars than they do stock cars.

These modifieds are found mostly in the Eastern half of the US. Both of the sanctioning bodies (NASCAR and ASA) listed here use the same rules, but do not race on the same tracks. The cars are easy to identify. These modifieds sit on large slick tires that are exposed on all four corners of the car. The roofs of these cars are more rounded than the other types of modifieds listed in this article, their bodies look somewhat squashed, and have large, 8-inch-high (200 mm), Lexan spoilers on the rear of the cars.

The driver sits on the left side of the car, and most of the time will have some type of small plastic windshield in front of him/her. All of these cars will sport small NASCAR or ASA stickers on the doors.

(Source: Wikipedia)