Pzev has an extra o2 sensor. Not a cat. Its got an extra muffler too. The gas tank is moved alittle, so there is a bend that needs to be longer for exhausts (vibrant specifically)
So other than having a shop cut and weld in alittle more to that one section of pipe, and adding an extra o2 sensor, (certain exhausts) it will fit.
Pzevs are mainly in the Green states, easy way to tell is look under your hood and see what emissions system the specific car complies with. It will say Pzev, on the white sticker.
The header will bolt up perfectly. I had a header on my car awhile back, and had no fitment issues with it.