Yes please do that!! Would love to see and try it out... Did you have to remove any seats to get it it??
Theres a guy on caraudio.com that has a 4480 on stock 110amp alt 2 batts and says he's getting 2200 rms out of it. With your alt I would try just one battery and see if you get any dimming and check you voltage while been played also and go from there....