I'll buy a 2015 base Mustang and then drop the 3.5 EB from my F-150 in it to see what happens. Guarantee it fits. Guarantee its got way more torque than the planned EB and the 5.0 Coyote. Why Ford didn't do this is anyone's guess but I'm also willing to bet the Ford will hate me for it.
Why mess up the truck....
or look in the junk yards last I read they have sold over 400,000 trucks there have to be some that were totaled.