I think I have reached the end of my building....
I have made holders for the housing of the connector. It will be more stable/stronger, it looks nice and it will not get all the heat from the plate right under it.
Made a small filling tube. This construction does not allow an exact filling so this will make it easy.
The girlfriend has arranged 60cc inject to fill it up.
And made a seal on the edge from a silicone baking mat.
A fresh engine is mounted, oil is on its way.