The 6.0 Power Stroke with a variable-vane turbo was phased in starting in 2003; this engine produced 325 horsepower (242 kW) and 560 foot-pounds force (760 N·m) of torque. The 6.0 L 32-valve pushrod-actuated Power Stroke single-turbo diesel was modified in 2005, boosting torque to 570 ft·lbf (770 N·m), but power remained the same as the previous version with 325 horsepower (242 kW). Due to very high warranty exposure and over 500 vehicle full buybacks (due to the Barneys Law), late 2006 was the last of the 6.0 L diesels.