2018 Porsche 911 GT3 RS Spied, Has 4.2L Engine, 911 R-like Rear Diffuser

While the current GT3 RS flavor of the Porsche 911 still turns heads as if the track special would have just debuted in all its Java Orange splendor, Zuffenhausen engineers are already out there working on the revamped incarnation of the Rennsport machine. The 991.2 mid-cycle refresh will bring significant changes to the hardcore Neunelfer and it all starts at the back of the supercar. This is where the GT3 RS’ flat-six sees its disp…