For sale: Procharger D-1X head unit. Unit is Black with helical cut gears. (quieter) Approx 1000 miles on unit. Purchased 10/2018 installed 11/2018. Approx 8 months old. Oil changed 3 times so far. 250, 500, and 750. This unit makes 12psi with my stock 6.4L damper. I'm selling because I'm...