I remember back in '70 when I inherited my 66 Plymouth Valiant, the fuel line going over the valve cover,(have no idea why I remember that) I think it was pure laziness running it that way looking back. I'll take precautions to prevent exposure to heat from the E manifold. I can always change it if it comes to that;)
I have had my share of slants, and in the summer especially, I can well remember fuel boiling away like crazy!! That oem hard line from pump on is right there where it gets HOT!!!