They didn't fit better for me! I have the '01-03 type, and even after denting a big dent in the collector and grinding away most of that flange, they were sitting against the steering shaft. I had to cut them on the underside of the primaries near the head, and bend them down so they run closer to the block. After doing that, the downtubes barely fit because the flange is so close to the block. But it does clear the stupid steering shaft.
BTW mine look the same as Mark's. I called MAC before getting them, and they told me all the Mustang V6 headers have the same primary design, the only difference between the years is the smog hookups. The picture just shows an older design not made anymore. This is what they told me anyway.