I am going to transfer my system over to my WRX this weekend and I am worried I am going to kill the alternator. To my understanding the stock alternator makes 70 amps. I have a 2002 WRX if that helps. I am going to run an Kenwood 8151 mono amp that draws 500 watts RMS @1 ohm. I am also going to put in a 140 watt RMS MTX amp for the speakers. So I will be continously drawing 640 watts (1140 watts peak) . I am also going to run a 1 farad cap for both amps which should help a bit. I plan to install 4 guage cable too. I heard there is a more powerful aftermarket alternator but do you think I can squeak by with the stock setup?