I need to know how much it will be to upgrade my Honda accord 1987 alternator?

[namor@ymailecom]

I am looking to place a new sound system in my car and I don't want to short the battery out so I am thinking it may be a good idea to upgrade the alternator and then have two amps, one for the subwoofer and one for the speakers.

 

[caraudiosuperstar]

i upgraded my alternator on my 91 accord due to the system, and i got one on ebay for 90 dollars, and its still kickin my stock alternator was 80 amps, and this one was 160amps