I have decided to route the rear sections of the fuel lines in the rear section of the cabin. I used soft aluminium fuel line 3/8th. It is easy to bend it and have it goes where we want. I curved the tubing to exit to the fuel tank. I've been told to use minimum fitting to reduce the risk of leaking so I did. Still have a few grommets and clamps to install.
I also replace the 2 doublers under the rudder pedals (pilot side only) to accomodate the new brake master cylinder attachment.