I am in the planning stages of a new build. Actually 2 new builds, but this question only pertains to one. 2000 Chrysler 300M. With all the amps and DSP and everything I plan on running, I will be drawing between 250 and 300amps of current. This is by far the most powerful set up I have ever done. And back in the day, capacitors were unheard of, so I'm treading on new ground. I don't want to fry the electrical system (obviously) or keep replacing alternators/batteries. Sub amp will draw about 150 amps itself, the other equipment about 150 amps combined. Already planning on running a Stinger SPC505 5 farad hybrid cap. The alternator I'm considering is 320 amp max, 180 idle amp, but is nearly $500! Stock alternator is 130 amp. Also, I have only been able to find one supplier that has an H/O alternator for my vehicle. Maybe you guys know somewhere to look? Should I also add a second battery or will the alternator/cap be enough?