L O N G time ago I went to Autozone for an alt. 108 amp factory rating, when I went for the dual spal fans, but the thing is a 17SI so the old style with two conductor plug on the regulator.....well the drive pulley had to be changed due to my having serp drive, I have had TWO replacements so far under lifetime warranty.......and this latest one I thought I had a bad bearing, no, it's a whine from it putting out heavy load, hear it from under the hood.....I dunno what to make of it, thinking of upgrading to a later model, but it's a PIA.....