Where is my CAT? With photos...

[treetop_73]

I am trying to get all inorder before I try to get my truck smogged and crawled under and didn't see a CAT. I looked online and found replacement cats that were just like my cat on my old Jeep and then some looked like just the manifold and was considered the cat. So now I am confused on if I have one or not. Is my manifold really a cat? I always wanted a truck but don't know much about these engines and all. Give me a inline 6 and I'll tear it apart. This just stumps me for now.


Thanks in advance