Well my battery light started to come on a few days ago. And then my dash lights started getting really dim and my horn sounded really weak. So I bought a new battery since the one I had was over 3 yrs old. Well everything was fine until today when the same thing happened before. So I came to the conclusion that it is my alternator. My question is I have a 500 watt Memphis Amp pushing 2 12's and a 50x4 rms Pioneer 4-channel amp pushing 2 sets of Polk Audio 6.5"DBs. The alternator I have now is obviously too small to take this much amperage for so long, and I checked with my local battery man and there is not a rebuild kit for it. So is there another type of alternator that I can swap in there that will be enough to power my car and accessories. P.S. EX model with power windows.