All Tuff Stuff alternators are hand built in Cleveland, Ohio and are tested to meet orexceed OEM specifications. AllTuff Stuff alternators are made from 100% new components and carry a one year limited warranty. Tuff Stuff has alternator applications for virtually all muscle cars, hotrods, customs and light trucksin just about every finish imaginable. Many enthusiasts prefer our clean, simple 1-wire alternator option whichfeatures a low idle cut-in internal regulator and provides plenty of charging atlow RPMs. All alternators are for 12 volt, negative ground systems, except where noted.