-Finally got the fittings to fabricate the short 7" line that runs from the firewall fuel line elbow (where the fuel comes from the fuel valve in the cockpit) to the red cube. -First attempt yesterday I didn't think my fittings were compatible with the hose I bought as it seemed too tight. -In the final analysis they were correct. -Put the AN6 816 fittings on both ends and installed on the airplane. (Oops it needs to be firesleeved - guess I'll pull it off and do that tomorrow).