I stopped and look at a few trucks at a junk yard and they didn't have this hose. They had a t fitting in a heater hose which ran a smaller hose to the throttle body. I currently have the t fitting, but my smaller hose goes to this spot above the coolant sensor (i think?). Now I'm a little confused
It can be confizzling. 5.0L engines usually have the tee setup, whereas 5.8L engines with the E4OD (most of 'em) have the one pictured with the line going straight from the top of the throttle body to the filler neck (sourced @ that nipple near the ECT and thermostat housing). Technically, as long as you have a pressurized feed into the bottom fitting (sourced from the 'top' of the engine), and a path for return (to the filler neck), coolant should flow.