There are many contests and lots of small companies that will add all sorts of obscure gizmos to add speed to the cars. So don't be deceived when you see a sketchy paint faded muscle car, it just may have all its goodies tucked under the hood. Accessorizing muscle cars has taken up a market of its own as well. Just like old cars, the Volkswagen Bugs for example, which are frequently accessorized by drivers, the same applies to muscle cars. Sleek paint jobs, and polished chrome trims are used to make the cars glimmer perhaps more than when they were built.
Rims are a huge deal as well, often the perfect finishing touch.
Inside, the cars are also well groomed. Often the interior is redone, the upholstery changed to whatever the owner desires, and for the big racers, a dashboard filled with all the gauges showing off the car's power is essential. For the fanatics, original restoration is often sought with only original parts used to make the cars more authentic. However that method of restoration can be very profitable because those cars are often considered vintage and worth a lot of money. Jeremy Shipp of Loma Linda, California has restored all original material on the inside of his '67 Mustang to the point of including the original radio.