well, the flange is attached to the cat pipe/piece. we swap that piece. while we're doing that, we can put your msds in y pipe, otherwise you wont be able to drive home. the y pipe is supposedly an easy install. i can ask him if he can do it saturday morning and for how much. believe me, it will be cheaper than anyone else doing it. he is the guy doing my 3L. worst case scenario, if he doesnt have the time to do it, which im sure he would, you would at least have the msds y pipe and 3 bolt flange in. then you would just need to get the headers installed. (if he cant do them on saturday). im pretty sure the msds y pipe will bolt right up to the stock "headers". the 3 bolt part takes place between the y pipe and the cat. yours is a triangle while mine is a diamond-like shape.
