and the 2.5 and 3.0 liter versions were also produced with gasoline direct injection . Modern versions feature a one-piece cast crankshaft and cast aluminum intake manifold . // 6G72 The 6G72 is a 3.0 L (2972 cc) engine. Bore is 91.1 mm and stroke is 76 mm. SOHC 12-valve, SOHC 24-valve