Thanks for the help everyone.
UPDATE: I traded my Boss monoblock amp for a Kicker KX600.4. I'm happy with the trade since I got the Boss amp for only 30 bucks a few months ago! The amp is in good working condition and has minor scratches. I'm going to use this 4 channel instead of the Hifonics ZRX600.4. This freed up a good $150 in my budget!