Got refurbished gas tank re-installed, and all lines done to fuel pump and up to carburetor with stainless steel lines and minimal rubber (for flexing between engine and frame and tank and frame).''
Gas Filler Grommet I bought from Classic Heartbeat Pickup Parts. Great product and they stand behind it to LAST.
SS Fuel line from fuel pump has larger rubber hose over it to help protect from vibration and stress.
That "patina" is finished paint at and around gas tank fill neck.