[archer1965]

Procharger - $5K and no warranty. Easy install.

Edelbrock - $7K, 3year/36K warranty. Not so easy install.

Both will void your factory warranty. Both will give you 600+ HP. If you're not after that much increase, look at bigger injectors, a throttle body/intake upgrade, cold air intake, exhaust upgrade, and a tune. Find a good tuner shop and they can hook you up with some smaller $ upgrades that will set your SS apart.

Just my two cents.