I have a 1994 Ford F-150 Super cab with a 302(5.0). I'm wanting to put a new exaust system on it and was wondering what the two cat looking things are. The one closest to the exaust manifold is a short one then behind that is a longer one then there is the muffler. I know one of them is a cat but which one, and what is the other one, and can I cut it off.

Please help