Sup brothers?My 03 busa is a track only bike with no thermostat in the cyl head,I did make a washer with about 3/4inch hole in place with the same thickness as the resess grove so the aluminum neck will sit flush.If Iam not mistaken I dont think I need that small collant hose from the neck of the radiator that goes to the hose neck on the head because.I think that hose was there to make sure the thermostat would open.Feel free to chime in.Thanx Adam