I was thinking about getting the 98spec JDM ITR header because I could probably find one with heat shields and it would look stock when I go to smog my car or if for some reason I get pulled over. Keep in mind that I live in California. Is the A'PEXi GT header carb legal? If I get the JDM ITR header, 2.5" carsound cat and 2.5" piping, I should pass smog as long as I run a cat right?