Hell, my dad's 2015 ATS puts out 272 hp and 295 lb ft with a 2-liter turbo 4 banger and a paddle shift 6 speed auto.
At 5.7 seconds to 60 mph, it's no slouch. And it drives, brakes, and handles unbelievably well.
I'd prefer a Buick performer have at least a 6 cylinder, but upping the boost on that 4cyl would outrun our 1980s GNs and make a "new GN" much more affordable than one with the Caddy TT V6. Though that engine would be killer in a new GNX...
its just a concept right now -so the name isn't what its going to be - I am just excited to see it based off the alpha chassis , if it does get released then you can share the after market with the ATS and Camaro market - and I think the Buick studio really is turning out some beautiful cars
and for as much as it pains me to say I hope if there is a grand national variant - I hope it is based on the LS engine format I love the turbo v-6 but the aftermarket is so strong for the LS based motor , I would so love to see a turbo LS in it