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http://www.edmunds.com/insideline/autoshows/geneva/2008/2008maseratigranturismos.html Like the various iterations of the Quattroporte sedan, the Maserati GranTurismo S isn't so much a new model as it is a slight variation of the current coupe. In this case, the additions of a larger V8 and a six-speed automated manual-transmission gearbox are the two main upgrades used to justify the "S" designation.