The alternator in my March serpentine kit that I bought used from a member wasn't holding a charge. A friend advised getting it rebuilt instead of new. I found an old fashioned auto/electric shop 2 miles from me. Called them, quoted me $40-45 for a rebuild. Dropped off on Tuesday at 3. Got called at 12:30 Wensday that it was done and only needed a diode replaced for $25.00. Needless to say but I've found me an electric shop for ANY future needs.