So then since an aftermarket oil filter was available from the factory, and a modern oil filter relocation is similar to that setup, is it then required to create the two in and out holes for oil to flow in and out of the engines, or are these existing holes that are currently plugged or otherwise utilized?
It looks like from the pictures that all the setups are connected the same way. I just want to make sure there is already a fitting for the unit. I will not be drilling and tapping my block for an oil fitting.