you have 2 on the block

1 under the plenum where the fire trap goes in & is then piped to the plenum

1 that is a tapered thread with a nut in it at the bottom on the other side under the exhaust near the engine mount

you can also drill a hole in the cam cover & fit an adaptor

there are many threads on here about breathers bud as far as i can tell there are a few difrent ways of doing it