Ok, Confused as hell right now, I have an RB25 that will be running a few track days, (drift/circuit) It has a Nitto oil pump, crank collar, 2 x 1mm restrictor's, So do I run the oil drain from the back of the head to the cold side, high on the sump above oil level, rocker cover breather's to a catch can, catch can drain back to sump aswell? do I put a breather on the catch can? (Also need the car to be street legal) Will this work? I'm about to pull the motor to fit the oil drain in the head, Would like it to stay there once I put it back in