King0581-
That canister basically condensates out the oil from the blowby vapors. One hose is IN the other is OUT. There is a drain at the bottom. There is not need to vent both valve covers as the block passages vent each side to the other.
FWIW ? I've conjured up a variation of that CCV by discarding the Raycor CCV filter and filling the canister with 12 (home made) disks of Foam Filter media.
Vapors pass thru the Foam Filter(s), oil collects on the media, fumes & vapors pass thru like OEM. Any oil drains back into the valve cover.
Works SUPER. No oil in the intake, turbo, I/C tubes or the I/C.
I clean the foam filters with soap'n water and re-install at every oil change.
I've never persued it but it seems ANY canister would work, and some plumbing