With the Buick Regal proving to be a huge sales success here in China, and the Regal 2.0 Turbo planned for a reveal at the Shanghai Auto Show next week, the chances of a high-performance version being developed (or badge swapped) is entirely within the realm of possibility.
As strange as it may sound, Audi is Buick's biggest competitor here in the People's Republic of China and the A4 is the Regal's main foe. Audi also sells the high-performance S4 model here, which is also the Opel Insignia OPC and Vauxhall Insignia VXR's performance target. Why not slap a Buick waterfall grille and a GNX badge on this biatch and call it a day? We've seen stranger things happen.