Yes it is roughly 100-105hp & 75-80 ft-lbs of torque less powerful than the HEMI. That is why I suggested they use the manual from the 2500/3500 model. The 1500 model still has the ability to accept one right, so why could they just use the heavy duty one. Also the 4.7L uses the same automatic as the HEMI in the 1500 model. The 545RFE was designed for the 4.7L originally so isn't it possible that the manual might also work with the HEMI? I admit I don't know very much in this department.