Gunther Werks has revealed its latest 993-based concoction, the track-focused GXR-Evo.Powered by a 455-hp naturally aspirated flat-six hooked up to a six-speed manual, the GXR-Evo weighs just 2386 pounds thanks to extensive use of carbon fiber.There are hardcore aerodynamics with dive planes on the front bumper and a huge rear wing, and the cabin is stripped down to the bare necessities.