I recently purchased a 1986 Bayliner Capri in immaculate condition. I have replaced all fluids in motor and outdrive. I pulled the cover off the impeller housing to check the condition of the impeller. It was a little eaten up but not broken yet. I will replace anyways. The copper suction and discharge lines attached to the impeller housing is where I ran into a problem. The copper lines themselves are in great condition. The half diamond shaped flanges are rusted through. Is there a way to replace those flanges without replacing the copper tubing. Is there a way to replace copper tubing with reinforced rubber hose. If so how?