Where could I find a high output alternator for a 2007 ford focus?

I have a 2007 Ford Focus 2.0L DOHC, and am having a very hard time finding a place that sells a high output alternator. Could anyone point me to a place that actually sells these things for this car? ThanksWhere could I find a high output alternator for a 2007 ford focus?try to see if one from another ford will bolt on that has a higher amp ratingWhere could I find a high output alternator for a 2007 ford focus?A little 2.0 engine couldn't handle a high output alternator..