Has anyone found a source for the 1/4in washer jar hose to pump, or 3/32in vaccum hose? Also the rad overflow is a thinner wall, but I think it too has the three extrusion ribs, just as the above. I found a company that will create the dies and extrude the hose, but initial start up is a bit high. Approximately 400.00 for the initial run of 200 ft. extremely cheap after the first run however. If any one has an interest, contact me. Thanks