EJ25 DOHC valve cover breathers
 

I am getting ready to swap in my 97 EJ25 engine in place of the EJ22 in my Impreza (also a 97). As far as i can tell, both engines have the same wiring and components, but the difference is the EJ25 has breathers on the top of the valve covers. Any ideas on how to properly incorporate those breathers, since my original engine doesn't have them? I don't have access to a 97 legacy or a 98 anything with that engine to see how they are routed...thanks.