I have a Jeep Wrangler and I wanted to upgrade the sound all around. I haven't installed anything yet but I have two sets of Polk DB 525's (45 RMS 4 ohm) and a Polk MM2084 (200 RMS 4 ohm). What I'm looking for are two amps to power these. 4 ch for the speakers and either a mono or 2 ch for the...