The Challenger is available in three trims: SE, R/T and SRT8. The SE is powered by a 250-hp 3.5-liter V6 with a 4-speed automatic transmission. The R/T's 5.7-liter HEMI V8 features 370 horsepower with the standard 5-speed automatic with sequential shift control, and 375 horsepower with the optional 6-speed manual. The SRT8's 6.1-liter HEMI V8 engine is mated to a standard 5-speed automatic with sequential shift control or an optional 6-speed manual, and whips up 425 horsepower and 420 lb-ft of torque. Touring suspension, 17-inch alloy wheels, air conditioning and power driver's seat are standard equipment on the SE, and the R/T adds performance-tuned suspension and steering, traction control, stability control, 18-inch alloy wheels, body color spoiler and bright dual exhaust tips. The SRT8 features sport suspension with Bilstein shocks, Brembo brakes, limited slip differential, 20-inch forged alloy wheels, high-intensity headlights, dual hood stripes, heated leather seats, SIRIUS satellite radio, Boston Acoustic sound system, and KeylessGo entry system. Optional equipment includes MyGIG entertainment system, navigation system, sunroof, and performance tires.The Dodge Challenger SRT8 was introduced in 2008. The SE and R/T trims are new for 2009.