Currently has the stock 90amp alt, upgrading to a 220 universal alt from power bastards ASAP but am curious to know for now will 2 big everstart maxx batts in the trunk be enough? Just incase that alt isnt as universal as they say. Also napa has group 31batts, 810cca for 90 bucks each with my military discount and a 18month replacement warranty, 30 months pro rated. going to be running an ap3000d at 1.4daily and upgrading to a cresendo playing at .35daily :thumbsup: