The best way to find an Infiniti I30 is by using autotrader.com. You can also try http://www.automotive.com/used-cars/11/infiniti/i30/index.html or http://autos.yahoo.com/used-cars/infiniti-i30-overview.
I went to the Infiniti dealership about this issue. My 2000 I30 had less than 60,000 miles and the alternator went bad. Believe me, there's nothing you can do. I called Infiniti USA, and was told it was not under warranty. It's just a glitch with this model.