What changed?

I'm looking at pictures of the engine compartment on the 02 stratus with 2.4L motor, and notice it looks considerably different than the 95-2000 model's 2.4L. What is different? Horspower is still the same 150, is this still a mitsubishi motor, or one produced by chrysler? And what is that black thing connnected to the airbox and intake manifold?