I'd never want to see that as a 4-door Mustang, but that'd be one badass Lincoln.
I agree that's the new Taurus/MKZ. Clean the lines up a little and rebadge it. The Europeans and Asian car makers would never know what hit them.
I'm still a big fan of the Pontiac G8 do to price over the Cadillac. But it is gone and the Charger does not seem to do it for me.