new alternator

hey i just want to know how big of an alternator ill need. Because im going to have subs, labtop, and a linear actuator in it. I have and 85 s10 2.5 L. and where can i get one from?

Thanks alot.

Ebay.

Yours stock I believe is 105amps if I am correct.

You can buy beefed up ones off of ebay for car audio purposes.