Alright, I haven't been on in quite a while but you have always been able to help me out in the past so here goes.
I am doing an engine dress up project and one thing that I need is Stainless Steel fuel Lines. Now I have found many companies that makes these lines. What i need to know is:

What is the interior diameter of a 2003 Mazda 6i (4 cyl automatic) fuel line? I am thinking it is 1/4" but I don't want to buy the parts and then take my car apart only to find out I got the wrong size. I have had some trouble finding this out so any help would be apreciated.