Are these new or rebuilt PS Pumps. Can you quote in qtys of 100, 300 & 500 if they are new. Can we place an expedited order of 20-30 to ship before the spring festival to test??We nees Alum Housing, 1200-1300 PSI, 3.25-3.75 GPM, -6 AN Pressure out and 19.38mm smooth return port to accept a reservoir. We will supply the reservoir.Best Regards,