Crankcase breather on '75-77 models?

[scott s]

So, I pieced together enough parts to run the stock air box assembly on my '75, but I don't see any nipples or attachment points on the air box for the crank case breather hoses.
I tried pulling up the parts diagrams and they don't show anything either.
How and where are the crankcase breather hoses routed on the mid-'70's models?

 

[inxs]

- does your left engine cover have a hole like this?

-

 

[scott s]

One of them did, off the '75. It was in rough shape, so I had a different one polished.
That may even be my pic....the one from my bike. Even so, the breather has two outlets. Where did the other hose go?

 

[XSLeo]

The stock breather on my 75 had two outlets, the right side has a rubber plug in it, the left side has the hose. It ran down into that hole. I guess the factory thought the oil mist that came out the breather would keep the chain oiled.