[Ken/Alabama]

The fittings on the rear of the block are both pressurized . One of them supplies the oil filter and the other for the oil pressure sender. The supply to the filter goes into the side of the filter and the return at the bottom and goes back into the oil pan. The correct 59A oil pan should have a return fitting just ahead of the dipstick boss or have a provision for a fitting on the dipstick boss itself .