Vacuum Diagram - 96 2.5 Outback - Ultimate Subaru Message I just went outside to take a picture under the hood of my 97 Outback with the 2.5. It's dark here so the shot may not be exactly composed as I wanted, but I think it shows clearly enough where the vacuum lines go. As you can see, I still have tape on the vacuum lines marking where they go as I had the engine out last year for a HG.