This photo shows a full on race motor installed in a fairly stock manner.  RHD harness has been flipped in the splice box here.  Also, note the ITG filter connected via rubber hose to the CF intake.

Race applications would usually dictate an aftermarket oil-vapor separator.  Mine drains to the oil pan as shown.  When it vents into the intake manifold, fouling of the plugs may occure at prolonged high rpm.