Its just a breather like the one on the left u can put a breather on it problem is finding one that small I'd take both tubes and run them in an aluminum canister....
Follow the hoses, the one that goes to the air cleaner is the breather, the one that goes to the intake manifold and connects to a removable valve is the PCV hose. On the E16S it's breater/left, PCV/right but it may be different on the E16I.
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84 Ford Bronco II 2.8
86 Ford Bronco II 2.9
86 Nissan Pulsar w/ Weber and CA distributor (gone, but not forgotten)
there's only one pcv valve on the E16i and the E16s, it's mounted on the pssenger's side of the intake manifold and there should be a hose running from that to the fitting on the driver's side of the valve cover then the hose on the other side of the valve cover will go to the breather filter on the inside of your air box if your engine is stock.