First engine bay look at the prototype mules:
Spied: 2015 Mustang Mule Engine Bay Revealed! - 2015+ Mustang Forum (6th Generation) - Mustang6G.com
5.0L V8 epper:
Spied: 2015 Mustang Mule Engine Bay Revealed! - 2015+ Mustang Forum (6th Generation) - Mustang6G.com
5.0L V8 epper: