800-hp Techart GT Street R spawns convertible

Germany's Techart is the perfect partner for anyone serious about modifying their Porsche. Case in point is the company's latest GT Street R based on the 992-generation Porsche 911 Turbo (and S), which delivers a maximum 800 hp and 700 lb-ft. Now the company has launched the convertible version of the GT Street R, and it packs all of the...