The stripped-out, track-focussed Porsche 911 GT3 RS is back. This new 992-generation model packs a plethora of motorsport-inspired upgrades, including aerodynamic tweaks borrowed from Formula 1, new suspension components, chassis mods and a more powerful naturally aspirated engine.The new Porsche 911 GT3 RS is as lairy-looking as the standard 911 is sensible and staid. It’s covered in aerodynamic flicks and fins inspired by the GT3 R racing car and comes with a 997-inspired look-at-me red livery.The new front…