The stock 5.7 pcvs are a quarter turn thing with no hose attached.
They won't work with this intake.

The old crate intake intake uses a pcv from some other application that screws in the front near the oil cap, and a hose runs to it from there.
The valve looks like one from a 2.0 or 2.4.

Run a breather hose to a breather tank, or a small k&N type breather or whatever you've got, off the fitting in the side of the intake.