I have an 8mo 250 A alternator that Nathan over at Excessive Amperage built for me last year. $455 new at the time. Excessive Amperage While it performed quite well and better than the stocker, I went to a larger custom case unit. This one's up for grabs. $240 shipped ground to 48 states. Rockauto's getting $261+$30core+ship for a stock reman...