If the new age of power is coming via some form of boost, then all the Mfg's will need to try match their own V8 power offerings. Ford and GM have formidable offerings. Chrysler not so much.
And those boosted offerings rival the Japanese and Europeans in performance, styling and quality. Which the quality is why domestics lost a lot of steam in first place back in the 70's and 80's.
I like the very good 3.5 and 3.6 v6 of domestics. But I think a 4L v6 twin turbo is just tits. So GM leading and squeezing 400 horses, Ford should be able to match that with minimal effort. Add some wicked tuning and mods, now 500 ponies just around corner.
The Taurus gets my vote because I can fit in it without going into my cirque du soleil moves. And the AWD plants it all when needed.