The GS will receive a 3.6-liter V6 in North America.

Low-resolution leaked images have prematurely revealed the Chinese-spec variant of the Buick Regal GS.

The main difference between the GS and the standard Regal is found by popping the hood. An earlier leak revealed the high-performance model receives a 3.6-liter V6 engine in North America.

Unfortunately, performance specifications weren't leaked. It's not too far-fetched to assume the V6 in question is General Motor's LGX engine, which makes 310 horsepower and 282 pound-feet of torque in the Buick LaCrosse, and 335 horses and 284 pound-feet of twist in the Chevrolet Camaro.

The six-cylinder spins all four wheels via an automatic transmission. On paper, the Regal Sportback GS sounds like the hottest Buick sedan in recent memory. However, we'll reserve our final judgement until it's officially unveiled.

Published by Car News China, the leaked images reveal the GS looks markedly sportier than the standard Regal, which uses a 2.0-liter turbo four.

It gets a specific front end with big chrome-framed air intakes integrated into the bumper, blacked-out headlights, and a black grille. The sporty look continues with side skirts, larger alloy wheels, tinted tail lamps, and the obligatory air diffuser out back.

A discreet GS emblem on the trunk lid rounds out the major exterior upgrades. However, keep in mind the model pictured will be built and sold in China; we're definitely getting the GS, but it might look a little different than what you see above. Car News China reports the Chinese-spec model will get by with a 250-horsepower turbo four, not a V6.

Buick hasn't commented on the leak, so when the GS will be introduced is anyone's guess at this point. We'll likely find out more about the hot-rodded Regal when this year's Shanghai Auto Show opens its doors to the press on April 19.

Shown earlier this week in New York, the 2018 Regal Sportback and Regal TourX are both scheduled to go on sale in the fourth quarter of this year.