Oil breather plumbing and catch can install

Was wondering if anyone knows the correct way to plumb the oil breathers on an EJ-20 that has 2 outlets on each of the valve covers and 2 outlets on the crankcase?

Is it best to run one or two catch cans and what is the best way to connect them?

There seems to be a lot of conflicting information about how it's all meant to be connected so hoping someone on here can assist. Thanks.

I know there's a variety of different EJ models over the years but from memory all I can think of is the engines having a single breather on each rocker cover and a crank case breather. There will also be a PCV return into the intake. There's some pretty thorough information from Radium on how to plumb their catch cans as a reference. You can run a single catch can or dual depending on how much room you have to work with. http://www.radiumauto.com/Blog/Post/New-Product-Release-Subaru-AOS-and-Oil-Catch-Cans-103