I have a Rockford fosgate 500 amp prime verified at 634 amps rms running 2 kicker c 12s each in 1.5 cubic foot sealed boxes rated for 300 watts rms each. I also have a Rockford fosgate 1200 watt prime amp certified at 1204 watts rms to run a kicker cvx 154 rated for 1000 watts rms that will be in a 5.0 cubic foot ported box. I also have 2 kicker 125 watt rms amps to run my mids and highs after my next check to upgrade them. I'm pretty sure my acadia has a 110 amp alternator will a 270 be enough or will I need a 370 amp.