Description We chose a High volume pump with large steel gears so we could get maximum scavenge, you should still pull vacuum in the crankcase at 20 psi of boost with this setup. There are 4 stages; 1 stage to pump oil and 3 stages to scavenge. The scavenge pulls 2 stages from the pan and 1 from the cylinder head to clear all the oil that gets stuck in the head from running high rpm, and fills your puke tank (you fast guys know what we’re talking about). The DSM block does not have enough drains, now we have -12 vacuum pump working on that nonstop. We selected this pump to work both in road race and in drag race, the only difference will be tank size. Oil pump is available with rear outlet Hex drive to drive your mechanical fuel pump. Part #: MMCENG1034 – EVO X/K-Series – 4 Stage Dry Sump Pump w/ rear drive MMCENG1040 – EVO I-IX/DSM/Subaru – 4 Stage Dry Sump Pump w/ rear drive MMCENG1045 – GTR R35 – 4 Stage Dry Sump Pump w/ rear drive