Oil is being pulled thru the pressure sensor, you'll see in the pictures below.I am very interested!
Was looking at this kit earlier. I can see the return oil goes back through the cap which is pretty common with these systems. But where are you pulling the oil?
I have been trying to find detailed info on this engine and having a hard time. Considering it's been around in Jaguars and land rovers there isnt much info . . . I guess people with those cars don't modify lol.