this is aluminum fuel line tubing.
i ordered the 1/4" line for the vapor return from speedway motors and the 1/2" line from jegs.
it's very easy to shape, but avoid excessive re-bending as this results in work-hardening of the material.
robbmc 550 hp rated mechanical fuel pump installed.
here's what the fuel line routing looks like on it's way to the rear end.
the cylinder clamped to the frame rail is a 100 micron fuel filter also from robbmc.
thanks for your interest!
danny