I got a used dual SM catch can for a good deal off marketplace to go onto my 04 C5. Got it mounted to the head and im struggling a bit with routing. Does anyone know if these are directional? (Ie one barb is inlet and the other is outlet) or if it doesn't matter?

 

Looks like the top is in

https://www.saikoumichi.com/s1_dc3_oil_catch_can.html

 

Awesome thanks!