Ford racing will be releasing the Cobra Jet intake manifold very very soon. This allows for more RPM and peak HP from the 5.0L. The intake does require a couple other parts, TB and tuning.
2011-2014 Mustang GT 5.0L Ford Racing Cobra Jet Intake Manifold
So far most customers have been doing the mono blade cobra jet throttle body as well.
MCA Member 45314
2011 GT CS Daytona Pace Car #36
"COURAGE IS BEING SCARED TO DEATH, BUT SADDLIN UP ANYWAY"