Muscle Car Hood Vent?

[redblade20xx]

Does anyone know the name of the part that muscle cars, such as the one in the Fast And Furious, install on there hoods?

Here's an image if you need to see it:
http://queauto.files.wordpress.com/2007/02/fast_and_furious_dodge_charger.jpg

Sorry for the description but I want to know whats it for and if I can still buy those types of parts.

[CodyJ]

uhhh...first of all thats a super charger and air filter stack, definitly not part of the hood, its part of the engine sticking out through the hood. a supercharger creats boost and ultimately horsepower by pressurizing air and then redirecting back into the engine. A. you can just throw a blower on any old car and B. you're looking at atleast $800 if you expect to make any kind of improvement