http://boston.craigslist.org/sob/boa/933502027.html
Alternator Conversion for MerCruiser 470 3.7 Littre Engine
Don't keep replacing expensive stators and voltage regulators on your MerCruiser 470, 170, 165, 488, or 190 4-cylinder engine! Fix it once and fix it for good by installing a real, self-regulating marine alternator. High mount system puts alternator on the cylinder head safe from bilge water; bolts up in as little as twenty minutes. Alternator warranteed for one full year. Call 617.699-2153 for ordering info.