In my opinion I'm not a huge fan of superchargers like Comptech or Jackson Racing's units. Superchargers, unless a centrifigual unit or having high compression (a la S2000) doesn't put out a whole lot of power on a small displacement engine. You can only force so much air into 1600cc's of space before exhaust flow becomes an issue.

Large displacement engines (say musclecars) benefit because of the huge amount of air the engine can hold. Atmospheric pressure is 14.7psi and with a blower you allow even more air pressure in.

If you're going to do forced induction, I'd definately look into doing a turbocharger setup.