50 lbs, thats all? I always assumed that we Zetecs were at least a couple hundred pounds lighter. It does seem to make sense now being that the V6 is only 1/2 liter larger in displacement.
However this is only the difference in engine weight. When you figure in all the extra support structure such as the larger subframe, thicker radiator, and v6 badges, that might creep it up there.