Mine just has a black rubber strap holding it to the diagonal tube. It looks like you have a hole for a p-clip which I’m pretty sure mine lacks. You might as well use it. I don’t think anything else fits there.
Rick, if you Google “what is the correct routing for a fuel line to the carbs on a jaguar E-type” among other things you’ll get some Chris Vine photos. Not sure if these are definative.
Possibly. It just seems unwise to place a vibrating fuel line against anything without first stabilizing it. I snagged the picture below of a '65 unmolested 8,000 mile car from this Michael Owen video. It’s good to revisit this video from time to time.
The fuel line is routed behind the hard line not touching the canister and secured against the subframe diagonal like Erica mentioned. I’ll be going this route I think.
Indeed, it’s a good thing to keep that line from rubbing against the air cleaner canister: that said, it would take dozens of years, if ever, for that line to wear through against that kind of surface.