Is it possible to tire of special-edition models of luxury sport coupes? We don't think so, and apparently neither does Aston Martin, which keeps cranking out the Vantage variants. The latest, the V8 Vantage S, makes its Web debut today. With a small bump in power to 430 horsepower and 361 pound-feet of torque, the 4.7-liter V-8 in the Vantage S...





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