Not supercharged and no turbo... unfortunately the Sport version of the g37 coupe has absolutely no difference when it comes to the engine. Sport version just has different trim, upgraded brakes, and stiffer sport suspension. And upgraded 19'' wheels w/ pricier tires.
BASE ENGINE SIZE 3.7 L CAM TYPE Double overhead cam (DOHC)
CYLINDERS V6 VALVES 24
VALVE TIMING Variable TORQUE 270 ft-lbs. @ 5200 rpm
HORSEPOWER 330 hp @ 7000 rpm It claims 17city/24hwy miles per gallon but I've heard its more like 15/22
One of the nice features of the G37 is it is a front-mid engine car... which means the engine is placed behind the front axle which makes the weight distribution more even on all 4 tires.
Your new car is 6 years old. So not exactly new, but still nice 
Yeah not necessarily new car, just new for me... my last car was a 1992 ford taurus which had a car phone the size of a shoe.
