Just came in the mail. It's a 130 amp upgrade kit for the standard issue Delco 10DN alternator. These are externally regulated, so I'll be running a Xantrex smart regulator on it. This is the power for the 109/200tdi project. I got it from Alternator & Starter Parts Wholesale
they also sell high output alternators. I think the 10DN 130A is about $170 by itself.
This is the same alternator that Balmar
sold for like 465 bucks. They don't sell it any more in favor of Mitsubishi and Leece Neville but they still have the lit for it, their model 912/100
I had been considering the indomitable Leece Neville 8LHA, but can't justify it.