What is Bosozoku? Wikipedia says:

Bōsōzoku ( "violent running tribe") is a Japanese subculture associated with motorcycle clubs and gangs.

They were first seen in the 1950s as the Japanese automobile industry expanded rapidly. The first bōsōzoku were known as kaminari-zoku ( "Lightning Tribes").

The word bōsōzoku is also applied to motorcycle gangs, who share an interest in modifications (often illegal) for motorcycles, such as removing the mufflers so that more noise is produced. These bōsōzoku groups also engage in dangerous or reckless driving, such as weaving in traffic, not wearing motorcycle helmets, and running red lights. Another activity is shinai bōsō speeding in city streets, not usually for street racing but more for thrills. With many bikes involved, the leading one is driven by the sentōsha, the leader, who is responsible for the event and is not allowed to be overtaken. Japanese police call them Maru-Sō , and dispatch a police vehicle to trail any groups of bikes to prevent any possible incidents, which can include riding through suburbs at speeds of 5–10 miles an hour, creating a loud disturbance and waving imperial Japanese flags, to starting fights which can include weapons such as wooden swords, metal pipes, baseball bats and Molotov cocktails. These bōsōzoku gangs are generally composed of people under the legal adult age, which in Japan is 20 years old, and are subject to increasing state and police pressure.

The "bosozoku" and "yanki" gangs aren't around as much but their show-y style still prevails. Although the "Bosozoku" style has spread to automobiles. However, boso' styled car owners prefer not to be called "bosozoku" style, but instead like to be called the "Kyusha Kai", or Classic Automobile Club. Choice cars are classic Celicas, Skylines, older Nissan Z series (240Z, 280Z), and older Celsiors. Today, newer 240Z's and Silvia's are also joining the scene.

Nissan Skyline KPGC110 GT-R Racing Car (left) and 1981 Nissan Silvia S12 Super Silhouette Race Car (right)

A branch of the Kyusha style, referred to as the "Works" Style, is heavily influenced by the racing cars of the 70's and 80's, often seen with wild body kits and external oil coolers. Wide, flared fenders often tightly housed wide wheels.

 
A heavily modified Bosozoku Mark II (left) along side a stock Mark II (right)

Along side the "Works" style, we see a lot of modern Bosozoku cars that are a lot more wild than racing cars of the 80's. Shown here, this Toyota Mark II. sports a "shark nose" hood, similar to the 80's BMW 6-Series, to give the car a more aggressive look. Vans have also seen their fair share of Bosozoku mods, most popular being the Toyota HiAce. Some compare the HiAce's to a Transformer or a Gundam robot.

Bosozoku Van (left) and Shakotan/Garuchan Styles sedan (right)

 Bosozoku isn't always about being loud. The "Shakotan" or "Garuchan", both meaning low, style is all about looking aggressive without attracting a lot of attention. Low cars, aggressive stances, and wide fenders are key traits Modern of . Although similar, the Shakotan style is a lot more simplistic than the Boso style. Shakotan also shares the similar camber features as VIP styled cars to achieve the lowest stance possible.


External Oil coolers, similar to 70's racing cars (left) and Bosozoku exhaust (right)

 It turns out, this trait is also seen on low budget drift cars. Smaller tires provide similar performance as larger, more expensive tires.

In the end, there is no REAL way of doing Bosozoku or Shakotan, as long as you, the owner, are pleased.