Flowmaster. The base Mustang with its aged V6 is a truck in sport-coupe clothing, a debatable 20-dollar upgrade at the Hertz counter. The Mustang V8, on the other hand, is a barrel-chested beast that lives to make stoplight mincemeat of similarly priced import sport coupes. But even the base Mustang V6 benefits from the numerous exterior and interior styling updates for 2010, and new optional features like Ford Sync are undeniably alluring. On this view, the 2010 Ford Mustang actually ...