In recent months, rumors have been rampant that the next generation of Ford’s Shelby GT500 Mustang would dump the existing 5.4-liter supercharged V8 in favor of a twin-turbo version of the new 5.0-liter Coyote V8 that debuts this spring. Unfortunately, in spite of earlier reports confirming the development, it appears that such an engine will not be installed in the GT500 any time soon. Mike Harrison, Ford’s chief engineer for the 5.0-liter and 6.2-liter V8 engines  made it clear that the mooted engine is not part of the program for the Blue Oval bomber.