Why go spend money on a different pcv. There is no crime drilling throttle blades. If you later use the carb on something different, just replace the blades or epoxy them shut.
A pcv is cheap and can be changed over at any time with a varying sized orifices. You can also use a rubber hose with a designated orifice size without a pcv and run it from the air cleaner and its a cheap alternative. Replacing throttle plates is a PIA and costs money too so does epoxy. What happens if the epoxy comes out.....
Ideally you want all the air to come out the t-slot instead of introducing it into the airstream without fuel entrained in it.