You shouldn't need the big 3 done on a non amp'd system. I'm willing to bet there is a installation fault somewhere. Like a speaker short or something.

agreed I run two amps (1000, and 850) I don't have the big three done

im gonna get all new speaker wire ran and new power source ran for the stereo, if that doesnt fix i will get a higher amp alternator

A different alternator won't fix your issue.(if the rewiring doesn't)

2004 Durango 4.7L alternator and ask for the 160 amp part number 12-328.

Will that bolt up, plug in, and use the stock belt without modification?

edit: DOH, never mind I missed your post on the last page.....

No worries but yes, it's a direct replacement.

Just for the hell of it... if you want to throw some more money down... heres an alternator cranking 200amps...
http://nations-starter.com/hiou20dodadu.html

Nice find, but holey moley $599!

novo, are you from lancaster massachusetts? and yes it is a nice find, I may buy it and pop it in just for the hell of it...