I am not all fired up about a Coyote with a flat plane crank, the more I research the Ford design, I realize it's a marketing effort more than a benefit. The firing order does not match a true flat plan and therefore fights (to some extent) the imbalance of a flat plane while not receiving the benefits of exhaust pulse timing with a true flat plane design. The benefit is really the heads, intake, VVT and computer programming, but that is not as Gucci.
That being said, Coyotes run real well, just did an exhaust on a stocker 5.0 that surprised me with more mid range than I expected and took a friend's early Saleen out for a day with an Aluminator supercharged over-the-counter Coyote with upgraded clutch, exhaust, more supercharger, and all the goodies to support it. It was downright brutal.
I'll also taint the waters that my 70 Mustang was very close to a twin turbo LS (painted blue of course) but the combination of gene pool dilution and my cheap-bastardness decided otherwise.