If you've heard Ford has a new 5.2L Flat plane crank GT350. Its a SCREAMER. More importantly they think its going to be a true rival to the M4...
http://wardsauto.com/vehicles-technology/upcoming-gt350-expected-appeal-new-breed-mustang-buyer
http://wardsauto.com/vehicles-technology/upcoming-gt350-expected-appeal-new-breed-mustang-buyer