I've fitted a Mocal thermostatic oil cooler, yes I did use the the old engines oil and filter! Lol
Pipes I bought were equal length so they took an interesting natural route to the cooler itself. Self supporting themselves on the bottom rails.
The cooler itself is fixed behind the the radiator, supported top and bottom with nylock nuts and m6 threaded bar.
I know the oil cooler would be best fitted up against the front of the radiator but this suited my current installation better for now and it is in a high airflow location anyway so should be fine.