67 Dart cooling issues

Please, who made the radiator? Champion - new pulled it from the box last week.

This thing doesn't push water out into the overflow does it? Nope

Sure acts like an airflow problem. - I tend to agree. I feel I have addressed water flow with the new water pump and high flow thermostat, not to mention the brand new radiator.

The problem seems to be airflow since it does it even worse at hiway speeds. - I always heard once the car is traveling 45mph or so you don't need a fan.

(could yours have been used before with an engine with a blown headgasket?) and maybe returned? - it is always possible

I gotta ask, The fan blows toward the engine right? Yes sir - blows HOT air