I got the canton coolant tank for Xmas and I was wondering what everyone was doing with the extra barb at the cap, my 04has one barb at the tank that goes back to the radiator and the new one has one at the tank and one at the cap, (below it on the neck) I have to get a different cap as well, I'm assuming if I get a cap without pressure release I can plug or remove the barb at the neck....any input appreciated