If your not going to pull of the sensor, why don't you just make it functional at that point so you don't throw any codes.
And yes, you should get a copper fitting and tap the hole. Thats the correct way to do it. My way is ghetto.
The PCV port on the Gen V is 3/8th. So try and find a fitting that can screw into the size hole you tapped with a 3/8th outlet to it. So you can use the same size vacuum line, unlike me.
How would I make it functional a lot of people just say plug it