Stock Car Products Dry Sump Adapter by KRC Power Steering. (A KRC 60550300 Spacer is Sold Separately to Mount your KRC Pro Series Pump) The Stock Car Products (SCP) adapter is the first part needed to mount a KRC Shaft Drive Pump to the SCP Dry Sump Oil Pump. The SCP Dry Sump Pump must have the main shaft drilled and tapped 3/8" X 24. A drilled Dry Sump main shaft is available directly form SCP. A 7/8" O.D. 17-Spline or 3/8" hex drive spud will be required.