I actually got excited for a sec when I saw that GM made a 3.5L engine that makes 280hp, 272tq -- that's almost exactly the same numbers as the 3.5VQ engine in every Nissan/Infiniti car.
Then I read the "super-charged" line
I know having a blower on your car stock is cool, and makes it really easy to upgrade pulleys and such, but why can't GM make a decent engine? A supercharged VQ with the same roots blower will put out 350hp minimum....