Motor Trend also hears it’ll be called GT 4 when it's all said and done. But we also need to be clear about something: The GT 4 will only share a similar name with AMG GT two-door sports car, and that’s it. The GT 4 will instead be built on the same rear-wheel-drive platform that underpins the new E-Class, thus ensuring the AMG GT’s standing as a halo model with its own unique architecture. As far as engine options go, the GT 4, like the concept, will feature a hybrid twin-turbo 4.0-liter V8 powertrain with as much as 805-hp. Sources also claim this range topper engine is already done and ready to go, with the trim level being dubbed "EQ Power+."