I Love, Love, Love the build! I hope you do not think that I am a “Debbie Downer”, however, I would like to offer a suggestion on the fuel line “B-Nuts.” On an aircraft, all fuel lines on the engine, are “safety wired”. That is due to vibrations that tend to loosen, or back off those fittings. I would suggest that it might be better to use B-Nuts that have provisions for safety wire. Those will come pre-drilled for safety wire. I would recommend .032 safety wire. A large majority of nascar and 3/4 midget racers use safety wire on their fuel lines. Please do not be offended by my observations. With that amount of money invested, it would be silly to miss a small item like that. Love the fabrication of all the hard lines along the frame.