Damn. Big baller. Their amps are very badass.

You might look into Arc Audio as well, theyre also crazy awesome. An Arc 4150XXK is rated at 80x4 RMS at 4 ohms but theyre underrated, youll probably see about 100 RMS. And I can get em for a couple hundred less than that, buddy of mine owns a shop in NJ is a dealer. http://www.arcaudio.com/arc-05/amplifiers/xxk_4150.htm
He is also an Audison dealer, and Rainbow, and Alumapro, and a bunch of awesome brands, so either way, if your serious hit me on AIM at kpr10is if you want a good price.
edit: sorry John im not trying to steal your business from SA

-kevin