I prefer the newer technology:
Electric Supercharger 5 PSI Vortex
Up to 60HP gain for just $200. For our cars you can even use 2, and get a 120HP gain for $400. Beats the price of intake / cams / exhaust.
Plus when not on the car, you can use it to move light or round items around your floor with the amazing wind force it creates.
[media]http://www.youtube.com/watch?v=CnU5wIryaf4[/media]