After all these upgrades power is still rated at 420. Torque only gets a 6 ft. lb. increase over the previous generation. Perhaps the tune is leaving more on the table this time. In the next 6 months, this question will be answered.
Roll back to 4.6L 3V technology, requiring more "delete" parts when upping the power of the engine. Don't know how I feel about this.
The point was made in one of the other threads, that those charge motion plates could be there to tame the low speed and idle driveability with the larger camshafts and valves. Seems like an easy simple fix, and i imagine there will be a large amount of testing fairly quickly to determine if they become a restriction or not.