its also usually called a windage tray, keeps the oil in the bottom end and from foaming at higher rpm's
just curious that you removed the PCV breather tube off the back of the oil pan. Wouldn't you have issues with the oil pressure in the bottom end? A few months back i got an oil pan from dorman that was almost welded shut and caused excessive oil pressure in the valve train. This resulted in oil in the intake and oil getting by the valve seals.
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