The Jackson Racing Supercharger (JRSC) can be had for $2500 (sometimes even less) for the b16a (Civic Si engine). Of course, that's a 4 cylinder. In that application, it pretty much bolts on in place of the intake manifold but is a different size, so a new intake is needed. I have yet to look in the Ody engine bay...is there enough room for a SC?
Most likely, a short ram intake would work very well; it's just a short, curved pipe that attaches to the throttle body and has a cone filter on the end. The stock airbox, etc., all get ripped out. Superchargers work best with short intakes, so I'd stick with a short ram. You could custom-fab a "ghetto" cold air extension to pull cool outside air up to the end of the short ram and even construct an insulating "tub" around it to keep the hot engine bay from interfering with you cool, dense intake air.
