Can't be a whole lot different than the LNF 2.0 T that is in my Sky. The tune alone would put the car around 300-310hp but that is at the crank so I would speculate it has besides the tune upgraded exhaust including DP, headers etc. Not sure if a bigger turbo is offered yet? A bigger IC more than likely.
On a Sky you can do a tune, headers full exhaust & a better IC and hit 390hp-400hp. These cars are 16-17lbs of boost stock with these upgrades you can run 25lbs of boost and on pump gas!
My current DD is a '09 Pontiac G8 GT. It runs OK, but is a tank @ 4000lbs. I miss the on tap thrust of a turbo (or two) and am searching for the next forced induction ride... It is sad that GM has the know how and parts in hand to make a great medium priced performance car, but they seem to have lost the inclination...
Just make sure it's NOT front wheel drive. Unless it's a TRUE limited slip diff, and you have slicks, you're wasting your time. I don't care if you have 280 or 500 horse power, you're not going ANYwhere in an open diff FWD car. You're wasting your time & money by upping your HP in that platform... Trust me, I've already been down that road in my GS. Dyno numbers mean absolutely zero on the road.