It's the 3.5 Ecoboost (2.7 is 15+ only). I like the 15's, but one thing I've learned in the past is never buy the first year of a new model...give them time to work out the kinks/bugs. Plus, I got this one for $12k off sticker price.
I'm very content to just enjoy it as is power-wise for now, though exhaust clips I've heard are tempting...and I do have a 3" Magnaflow muffler just sitting in the garage.
First thing though will be a spray in bedliner soonish. And I think I'm gonna have to find me a non-Ecoboost trim piece for the front bumper to get rid of that license plate bracket.