This 1986 Porsche 911 Carrera cabriolet is powered by a replacement 3.6-liter 993 flat-six paired with a Type 915 five-speed manual transaxle with a Wavetrac limited-slip differential. Refinished in red over black leather upholstery, it is equipped with Turbo-look steel rear fenders, a black soft top, Boxster brakes, front and rear spoilers, a…