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 produces 425 horsepower and 420 lb-ft of torque. Touring suspension, traction control, stability control, 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, 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 a multimedia infotainment system with 30-gigabyte hard drive and navigation system, sunroof, and performance tires. The 2010 Dodge Challenger carries over from 2009.