This is kinda a loaded question in the first place. If you are talking about matching HP and torque nubers anyway. It's going to be extremely difficult to find any gas engine that will match a Diesel HP and torque. For instance the 6.0 PSD puts out 325hp from the factory and nearly 600ft lbs of torque and that is the advantage of a diesel. I don't think there has ever been a diesel made for a pickup that if you tried to match the HP to a gasser would match the torque also and i think that was the original question.
