Ford Mustang EcoBoost engine under the hood?

Bill Ford Jr. gave an interview on Tuesday night at Princeton University and a student asked if the builder had installed in the future EcoBoost engine under the hood of the Mustang. Ford Jr. responded simply "yes" without giving further details. A turbo engine in a Mustang, heresy or not? In any case, there is a precedent with the SVO model released in 1984, 2.3 liter turbo engine and ... 4-cylinder 175 horsepower. Now several questions remain: 4, 6 or even 8 cylinder EcoBoost? when? at what price?