The way your thinking of fitting is a little pointless on the DE as it breaths heaviest at idle and low load because of the high vacuum from the plenum, that's why you often see a pool of oil in the lower half of the plenum when you remove it.
You need to fit a sealed catch can (airtight! one feed in and one out) to the low throttle/idle side of the PCV system, IE the left hand side of the engine, replace the pipe that goes to the front of the left hand cam cover at the one way valve, and fit a catch can between that and its vacuum source at the plenum, the can must be sealed as if not it mess with the idle and running.
The way you are thinking is also not ideal as you would be venting to air, and not making use of the engine vacuum at high loads to provide positive crankcase ventilation, and there is very little oil vapor drawn back into the engine from this side.
I wrote a guide somewhere, and I will see if I can find you a pic for fitting.
Guide for PCV systems
http://www.350z-uk.com/topic/89535-oil-catch-can/#entry1349925