Very nice build thread, like it. Very organized. I think the muffler we are looking for was discontinued or something because I CANNOT find a trace of it (but 1000% sure its custom performance engineering for a mazdaspeed3).
I found an OBX performance catback for mazdaspeed3 that looks exactly the same as mine. IF we can't find my exact one maybe you can try that one.
(Love the pic of the nike shoe box
)