I am hooking up a 4 channel and a mono block amp for my system. It'll be pushing a good bit a power and i was looking into a capacitor or a stronge alternator to support it. I know the stock alternator only has like 70 amps. And if i run two amps it will wear it down. I have also heard that a capacitor is worthless and it also wears down the alternator. i'm not sure on what to do...any advice? suggestions?