The Nissan 350Z has eight variants available: five Coupes and three Roadsters. All come equipped with the new 306-horsepower, 3.5-liter V-6, and all but two come with a choice of either a six-speed manual transmission or a five-speed automatic. Safety gear on all models includes dual-stage front airbags, with seat-mounted side airbags on the Roadster Touring and Grand Touring. Antilock brakes with Electronic Brake-force distribution and brake assist and traction control are standard. So is a tire pressure monitoring system.For 2007, the Nissan 350Z receives a new V-6 engine.