Fuel Line Mod Concerns

What keeps you up at night worse:

A) A fuel hose running overtop a not-very-hot valve cover

B) The close proximity of the stock metal fuel line, the fuel filter, and the clamped-hose connections to the extremely hot exhaust manifold

The correct answer here is (B). If you follow the prescription and use SAE J30R9 fuel injection hose and matching fuel injection hose clamps (not just any ol' black tubular rubber thing and any ol' clamps) then the upgrade is at least as safe as the original setup; easy to argue it's safer, and that's plus the operational benefits.

That woven-silica sleeve shown by Duggie is a further upgrade/additional level of redundant protection.