I have a V3 Vortech Si (no tapping oil lines) with 25k miles on it. It has a Steeda heat exchanger, new intercooler pump 2k miles ago, a 3.25" pulley, Kenne Bell Boost a Pump, Diablo MAFia, and 39lbs injectors. There was zero wear in the head unit and zero shaft play. With a Reichard Racing 3.4"...