A tip given to Jalopnik states that Ford chairman Bill Ford Jr. confirmed that an Ecoboost engine will appear in the Mustang, although a timeline and engine specifications were not provided.
While speaking at Princeton University, Ford was asked by an audience member about the possibility of an Ecoboost Mustang. Ford confirmed that the turbocharged engine would reach Ford's pony car, but no further information was revealed. Ford current Ecoboost 4-cylinder is capable of up to 247 horsepower, while the 3.5L Ecoboost V6 is good for as much as 365 horsepower. While power is somewhat diminished compared to larger V6 and V8 engines respectively, fuel economy figures make up for the performance deficit.
It's conceivable that either application could find its way under the hood of a Mustang. A 4-cylinder Ecoboost would be a potent competitor to smaller engined cars like the Hyundai Genesis (and certainly the Mustang V6 is now a legitimate performance car in its own right), while an Ecoboost V6 could bridge the gap between the regular V6 and the 5.0 V8. Jalopnik has suggested that the "SVO" trim, which used a 2.3L turbo 4-cylinder in the 1980s, could return, but there's little evidence to back up that notion. Then again, Ford did revive the 5.0 badge, and with children of the 1980s now in a position to buy a Mustang, it might just happen.
More: Ford Mustang To Get Ecoboost Engine, Confirmed By Bill Ford Jr.