Is there anybody out there that has bought and installed the new mid-lenght headers that kooks just came out with for the 4.6? Don't even know if they are even available yet. They look like they have some serious potential. But i know they were all over the boards for weeks, and then they made the mold for them and i haven't seen or heard anthing about them since. So anybody got them yet? how are they performace wise? got pics?