Larger Alternator

[festersays]

Hello everyone. I started my car audio level off little, with only one 640 watt peak amp pushing a sub, and component speakers.

I then upgraded to a different sub, with a second amp, that runs at 600 watts rms (really, about 1000). The old amp is powering my components, still.

Then I really dropped the ball, adding another sub into the equation. The 600 watt amp isn't quite fit for a setup like this, so I have on order a 2500 watt amp from American Bass.

Now, I'm just really unsure on how well the alternator can handle all of this. Granted I wont be using all of that power, but still. Has anyone upgraded their alternator, and to what? It's a very vague question, but I'm honestly pretty stumped and I just don't want to fry any of my electrical.

Thanks for any and all help in advance!

edit: I should mention, this nonsense is taking place in a 2009 pontiac g3.