OK guys and gals, I have a modified 5.0L foxbody. The only thing stock is the bottom end. except the cam of course. I am looking for actual differences in the the gt-40 intake and the cobra replica intake. Is it really the same lower? if so does the gt-40 upper flow better? and if its the same intake all around then why is it rated for 75hp more than the cobra? I want facts, not opinions please. Thanks