From what is available, all of the Cobb products thrown at the FiST will make well over 250 horsepower and 300 lbs feet of torque to the wheels, and they are just bolt ons and a tune. You may want to pursue European forums being that they have had the car longer and more quickly adopt fast hatches. I would have to imagine that the block can withstand major power bumps, but its a new platform and engine so the limits have yet to be tested.