http://i371.photobucket.com/albums/o...eaders_STD.jpg
How can you say that when this image (using F.I. exhaust) clearly shows a difference between HFC & LTH. Tony has eliminated the stock exhaust but has kept the exhaust the same on both tests so only other changing variable is the LTHs v. HFC.
I will agree that the stock headers are very well built and designed, but a properly designed LTH setup will outperform stock headers plus HFC.