You said it, Tom. It's going to be a nightmare.
The old race cars had a filter called a "grenade" to keep debris from the external oil system. It's a magnesium casting with a stack of fine mesh filters inside that attached to the motor in place of the internal cooler. I think the name was partly due to its shape but mostly due to it role when an engine "grenaded".
Here's one on a 906 (just aft of #6).
