Works great, output is much better than the stock 60AMP alternator I had. Now my lights don't dim at stoplights when i'm playing music. Also it's a brand new unit, much better than some reman crap that may or may not work from your local auto store. Would definitely recommend over a reman unit or a one wire alternator.
I'm using this on my '64 Impala with a 3 wire alternator setup.