"The 2006 Dodge Charger Daytona R/T will feature a five-speed automatic transmission with AutoStick® and a 5.7-liter HEMI V-8 engine that offers an estimated 350 horsepower and 390 lb.-ft. of torque -- ten more horses than the previous 5.7-liter HEMI -- for even more power in this modern rear-wheel-drive muscle car."
But still they do have the capability to throw in the 6.1 liter.