Wow...interesting, I didnt know they stopped offering the MIG header. Kind of stupid if you ask me...I understand the brand identification theory, but $530 is expensive any way you put it.

The race header has a 2.5" collector and a different tube design. It also eliminates the cat and bolts right onto the exhaust.

I had the Comptech TIG for a long time...very nice header. I would probably opt for a 2.5" collector header though if you plan on slowly building NA. If you plan on boosting, youre wasting your time with this stuff