After a one-year hiatus, Porsche's 911 GT3 returns with an improved suspension, standard Porsche Stability Management, and a new, larger engine (3.8 liters, up from 3.6). The engine puts out 435 hp, 20 more than the 2008 GT3, and the engine's variable valve timing system is designed for more even torque distribution in the middle of the rev range. Pricing will start at $112,000.