winter just hit us out here in colorado and i noticed a bad problem last nite! when i'm driving with the headlights and defrosters on, my battery gauge goes to the lowest "good" mark. the guy i bought the car from told me he just replaced the alternator with a stock replacment, 75 amp, but should i go with the 3G 130amp swap? if so, what all will i need to do this. i don't want to get stuck some night because i had to defrost my windows :/