I just looked at the Inline Tube part numbers. I see that they show 61-62 the same for fuel lines and 63 has another part number. I have not had them out to compare but the 63 Jetfire I have sure looks like the same fuel lines as my 62’s have. Does anyone know if there really is a difference? If there is no difference then maybe they have something wrong with there listings and their 63 fuel lines would be correct? Just a guess on my part but they should have the correct lines available if they were before.