The Porsche 911 returns for 2007 offered in several Carrera trims: base, S, 4, and 4S in coupe or cabriolet bodystyles. Other 911 coupe models include Targa 4, Targa 4S, GT3, and Turbo. Standard equipment on most trims includes automatic climate control, a trip computer, a premium sound system, an alarm system, and dual front and side impact air bags. Options include two-tone interiors, an electronic logbook, 19-inch Carrera Sport wheels, and a tire pressure monitoring system. The S trims are available with a power kit that includes modifications to the engine and exhaust to produce 381 horsepower. Porsche's ceramic composite brakes are also available.