I would at least put one battery in the rear in my opinion. doesnt have to be anything extravagant, maybe at least a kinetik 800, AT LEAST. your amp would technically require a 1400 or 1800 but thats your call. if your gonna snag one though, might as well spring a few steps up and u may not see any voltage drops with maybe, an 1800
haha im getting some 4 awg from 99grandprix later today hopefully, I am going to do it with that //content.invisioncic.com/y282845/emoticons/veryhappy.gif.fec4fed33b4a1279cf10bdd45a039dae.gif
big 3 is cheaper but runnin 1600 rms, the big 3 isnt gonna do a dramatic difference. your right though, its cheaper, so do that and see what happens but I see you springing for the batt