Hey Wayne, if you mount the tank in a lower location such as the airbox, how do you keep from having an air bubble trapped in the line?
I have my Weapon-R tank mounted to the front engine guard and use a clear tube to connect to the radiator. Before I mount it, I have to raise the tank above the radiator outlet in order to get all of the air out of the line. I can then lower the tank into position and the resulting vacuum keeps the radiator full.
Unfortunately, I have to repeat this process about once every 4-6 months as eventually some air gets into the line and makes its way in between the coolant in the radiator and coolant in the tank. As the engine cools after shutdown, the air pocket is ingested into the radiator making it not completely full.
I haven't had any problems but I don't like the idea of the radiator not starting the day completely full of coolant. Others should be aware of that as well.