Bolted under the hood of the 3,400-lb. 2006 Subaru Legacy GT Spec B is a powerplant befitting a true sport sedan. A 2.5-liter, 16-valve, dual overhead cam turbocharged four-cylinder engine with variable valve timing generates 250 horsepower at 6,000 rpm and 250 lb.-ft. of torque at 3,600 rpm, with power going to all four wheels through a five-speed manual transmission. An automatic transmission is not available.