S. C. P. "Super Flow" O-ring sealed oil pumps are manufactured on our new Mori-Seiki machining centers to precision aerospace tolerances to provide the ultimate in volume efficiency. All gear bodies, mounting plates, and end housings are double disk ground within . 0002 (2 tenths). All shafts, studs, and valves are 4140 heat treated material and O. D. ground. We manufacture these pumps with our unique internal scavenge manifold, thus eliminating the need for an external manifold. Our pumps are meticulously assembled, inspected, and dyno tested by our engineering department to ensure the best and most reliable oil pumps possible. We at Stock Car Products have been building the finest and most efficient dry sump pumps since 1986 and are committed to development to ensure the highest quality products today and in the future.Pit Stop USA offers Stock Car Products 4 Stage Dry Sump Oil Pump - SB Chevy - Engine Mount SCP-204A at low everyday prices. Be sure to check out all of our products from Stock Car Products including Stock Car Products Engine Mount Oil Pumps.