The Porsche 911 isn't really low tech from an engineering perspective. It's actually one of the most technologically advanced sports cars on the market. However, the 911 Carrera T is a lightweight stripped down, back-to-basics version of the Porsche.
As a result, the 911T gets lightweight glass, less sound insulation, a piece of rope instead of actual door handles, and a no-cost option to forgo the PCM infotainment system/radio.