Ohio Generator makes the biggest, baddest, best alternators, period! They are like $525.00 but carry a life time unlimmited warranty. Chromed or polished is extra. Up to 320 amps available. I've seen SPL competition vehichles with just one of these alternators push over 3,600 watts RMS and draw off of 4 80 amp circuts plus the power consumption of the head unit and highs amps with no problem. Their alternators are always underated to be safe. Great for any truck! Winches, KC lights, air bag copressors, hydraulics, mulit amplifier sub systems, etc... Ohio Generator is the best I've seen!