Sandwich plate installed. I had conniptions when I discovered that 95' Miatas did not have a oil source on the block. I saw that it was blocked off from factory. I shed a tear that day and bought the sandwich adapter (M20x1.5mm fittings) with a stainless steel oil feed that mated to a MSM oil feed (M10x1.5mm fitting) The stock MSM oil feed line should have gone directly into the block (but it's nonexistent)