if youre that serious and plan on using that much power or if you'e gonna do some kinda SPL challenge I suggest doing this...
1) ugrade your alternator
2) run 0-1 gauge wire (ducttape the whole wire)
3) add a second batt in the back
4) wire up a couple caps 2 per amp would be More then enough
5) run 2 gauge to the amps
6) make sure your highs can keep up with your bass. other wise you'll have a ghetto mobile.
also remember to keep the power lines as far away from the speaker lines as possible.
and post some pics when youre done