The latest I heard is that it is still using the same 5.2 setup, but throwing the cross plane crank in instead and also throwing some force induction. Not sure how I feel about that set up all around. One of the reasons I traded in my 16 GT Performance Package, was for that flat plane crank. This thing sounds like it's going after Z06 corvettes, considering the horsepower range. Still love how HP-dense ford's engines are.