H.O. Alternator question

[goku87]

The Back Story:

After all the late nights and around-the-world long distance phone calls, my last hope for a rebuilt alternator was lost (after a long two weeks lol). There is a local shop I know of back home that rebuilds alternators and I was hoping they would be able to turn mine into a high output alternator. I didn't want to believe it but apparently all the things I have been reading about our Yarii alts not being able to be "upgraded" is a fact, and that's just the way it is, apparently. So, to get a high output alt, we basically have to buy one.

There are only a couple of posts I could find here on this topic, but they didn't really have anything other than "buy one here for $500+" so rather than resurrecting a dead thread I thought it best to make a new one with hopefully new feedback available...?

The Question(s):

Will I even need a high amp alt?
-stereo @ 2100W RMS + 1 extra battery (maybe 2) + whatever other electronics I may add in the future.

Has anyone actually purchased one?
-where from and how much did it cost?

I guess an "overdrive?" pully might do the trick if the wattage is low enough? Anyway, thanks in advance.