Have a classic vehicle or old tractor with a generator? Upgrade to a higher output, more reliable, internally regulated alternator. We stock many conversion alternators for replacing older systems. These are available as single wire - self exciting units in 6 or 12 volt as well as positive or negative ground. These come with a standard single groove pulley, but we have a large alternator pulley inventory to match the belt width of your application. For an easy installation we also stock a universal generator to alternator bracket kit.