Mazda RX-8 with a Twin-Turbo 3.1 L Saab/Opel V6 The Mazda RX8 was built by MAX Performance in Gorzów Wielkopolski, Poland. Under the hood sits a twin-turbo 3.1 L V6 built from a 3.0 L Saab B306 V6 and 3.2 L Opel Y32SE V6. Both engines are based on...