This is to go in the end of the inlet manifold. Totally different part to the PCV plate/delete you have pictured but you will need one in order to fit your PCV delete plate.
What you have already is the PCV Delete plate that fits in place of the PCV (on the cam cover). The big gaping hole in it connects to the plastic crankcase breather pipe that loops around the side of the HPFP and down to the front of the block.
The item I have linked above attaches to the end of the inlet manifold to blank it off as you have removed the PCV and the 'U' shaped plastic pipe that connected the PCV to the inlet manifold.
