The CTS-V has been a heavily customized car over the past few years, and now that Cadillac has released a true sports sedan, we assume the same will happen to the ATS. The D3 Group is early in the game, giving the exterior a bit of a new look with an aero front bumper, side skirts, a roof spoiler, wheel well flares, blacked-out rims, and two enormous tailpipes. Unfortunately, the only performance enhancement was a beefed up air intake. We assume that'll change soon. 

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[via Serious Wheels]