Good observations:

Originally Posted by VEW
Shouldn't the valve cover have a breather cap on it? Looks like the road draft tube is still there and not converted to PCV system.
Yes, unless there was/is a PVC set-up.

Originally Posted by VEW
Looks like the road draft tube is still there and not converted to PCV system.
PVC was not standard equipment on all/many trucks, especially small trucks.