help ID intake ports chevy 250

[kljfamily]

Ok, for those that find this later, the bottom is def a coolant line. There is a T fitting that should be there that routes from the smaller heater core line to the water pump. the T makes sense as it allows the coolant in and out. the Odd connection that is on mine was the confusing part. Confirmed also it is there to help the intake warm up on cold starts. So is it necessary in NM probably not.

A fellow C10 enthusiast sent me the pic below