A31nz

Hi ya, I’m new here. I’m in the process of cleaning up and getting it on the road, my project car a 1989 a31 cefiro. It’s running a s2 rb25det, it has the heater core still under the dash and I’ve been looking around for heater piping diagrams or any idea of which piping I can use to plumb it all in from the engine to heater core. Any advice will be plenty of help!