I've never been impressed with any 4.6 i've driven or beat. They just dont have what ive gotten used to with a BB Mopar. Not even remotely. If I need boost to be happy i will use something else. I have pretty high expectation for my current 6.1 project. Good luck with your Mustang adventure, the Coyote is a very stout engine and really puts everything else Ford has built in the last 30 years to shame.