I need a higher output alternator.

[AntwaanRandleEL]

I'm so confused. I just need a higher output alternator to keep up with my stereo system in my '90 LX 5.0. I can't pick one! I keep reading all this crap about one wire hook-ups and stuff. I just want one that will bolt right up and use the 2 plugs I have now. Is there an alternator like this? I'm looking for like 130-140 amps. Am I going to have to get one that I'll have to make "a few minor modifications" to get it to work in my car? If there is one out there that will just plug right in, please tell me which one it is ( a part number would be awesome) and if not, can someone describe what the hell the "few minor modifications" are that are required to make it work in my car. Thanks a lot. I aplogize for my stupidity, I just dont get it!