I guess I just don't get it. Why spend all that money to get a fairly accurate replica of a 60's automobile and then muck it up with a modern fuel injected engine? If you want a mustang, then buy a mustang!
Whenever I see a beautiful replica and then the guy pops the hood and I see a coyote engine, or any current FI ford mustang engine, I am disappointed.
Give me any FORD carbureted engine that belches fire, makes my eyes and ears ring, can be tuned with a screwdriver and a wrench, leaks 
oil and gas and I'm happy.
But that's just me.