also dont forget the two most important distinguishing features. the 5.7 Hemi also has "Variable Cam Timing" (Chrysler's version of Honda's VTec), and Multi-Displacement System (MDS). MDS has the ablity to turn off cylinders to save gas. so basicly it turns a V8 into a 4 banger when on the highway or cruising. MDS will only come with the 5 speed AutoStick though.