Does anyone KNOW what the real engine size is for the Vespa 2011 GTV 300? The Vespa website says 278 cc but it also shows a bore and stroke of 72 mm x 60 mm, which calculates to 244 cc (3.1416 x radius of 3.6 cm squared x stroke of 6 cm = 244 cc). I am thinking of buying one and would really like to know if the 2011 is 278 cc. Thanks!