Your oil lines have reusable aluminum fittings made by TechnoChemie (TCh). They can be rebuilt. The hose is DN16 hose (18mmID x 25,5 OD) made by Cohline. I only make the larger,
DN20 hose (22mmID x 30.5mm OD) fittings used in '70-'71, but you can contact Brad Davis at
HBD Products & he can set you up with both the small fittings and the hose that you need.