I can not say anything more about the Stupidity of Installing Heddars! Now if you are going to create a 1/4 mile racer, then go ahead! Long Collector Heddars are great for no torque Small Block Chevrolet Engines. Why did they make em that way? To get your dollar, that is why. You see if you cut all that pipe out a the way, break all those bolts off and install heddars and they don't do shit, what good are they?