Specter Werks’s C6 GTR is just flashy enough to win us over at CarVersation.  While its appearance may echo polished aluminum, the body is made up in large part of light composites.  The aesthetics have been altered with a new splitter and rear-diffuser, 19″ alloys up front and 20″ out back, and a vented hood.  The Chevy LS3 V-8 has its displacement raised from 6.2 L to 6.8, pushing up horsepower to 615 and torque to 578 ft.-lbs.