Need a trained eye..., ...some hose connections Options

[stateofidleness]

Hey fellas,
Car ('73 1.7L) likes to not idle too well and I've always thought it was partly due to a vacuum leak somewhere. I took the air cleaner out for the first time today to vacuum out leaves and cedar, and found a hose not connected to anything.

The hose not connected to anything is connected to the distributor on one end, and was laying underneath the air cleaner on the other.

I also noticed that the thing by the battery tray appears to be missing some connections on either side (decel valve maybe?)

Can you take a look at the attached pics and see if you spot anything not right with the connections? Where would that distributor hose connect to?

I also have an after-market air cleaner that is supposed to work for the 2.0L. I thought this was swappable with the 1.7L, but the 1.7 has 2 90degree bends in the plastic air cleaner, and the 2.0L one only has 1. You can see in the pic where the previous owner put some kind of glue or something on the intake and I thought maybe there's a leak there as well.

does anyone have a 1.7L intake plastic piece with no cracks?