Before i get started here....yes, i have searched the forums and i cant find the info im looking for. I have a 90' supra comp and just installed a new sound system in it. Total watts is about 1500 and im pulling about 125 Amps. Im running 2 seperate perko switches and i have a seperate battery bank of 3 marine deep cycle batteries totalling 305 Amp Hours. I also have another battery that is just used for starting the motor and running the gauges ect. My question is i dont know if my stock alternator can handle this load and charging it. Whats the stock rating ? what should i go up to if i upgrade and where is a good place to buy them without having to refinance my house ! haha.