For those of you wanting to do the same alternator, here's the info from when I bought my alternator:

I purchased it from DB Electrical through Ebay.  Their number is 800-753-2242 
The part number is AND0525 (Denso, 50 amp, 1 wire, non-chrome)

The one that I purchased was only 35amp but he said they don't have a 35amp anymore as they bumped it up to 50 amp.  This shouldn't be a problem because with an alternator it will only put out the aperage that it needs based on the battery charge levels.  I just used the harness from Korves Oliver to hook mine up and I don't have any problems with the wire size.