yup, that's what had me scratchin' my head... Never seen a cat like that, most times, at least looks like two halves, seam 'round it in the middle, like a cat, dang it. I don't know, don't care, gonna take it out. Gotta measure exactly what pipe I need, it's swelled out to about 4" or so after the flange from the down pipe, I'll keep it that big untill it hits the tail pipe, once I take the muffler out... or might just find a complete 4" new exhaust.... might be the best way to go, by the looks of it, I need to tighten up the turbo clamp anyway, oughta just take it off, and tighten it up when I the new down pipe goes on!