You are correct that it's better to have fuel flowing UNDER a potential spark source than over it. However, my car is set up that way...no leak, no problem... but I do keep an extra close eye on that connection.
To get more clearance, you could turn the distributor clockwise & "leap-frog" the plug wires over clockwise too a couple spots to move the vacuum can a little out of the way. That gives you some clearance to attach a rubber fuel line to the end of your carb's upper fuel line dual-feed setup. To be even more safe, many of the dual-feed upper fuel line setups (not the one you have I don't think) have fuel inlet nipples that screw in. If you remove that nipple/hose barb, you could plumb in some custom-bent hard metal fuel line (less prone to leaks). A last option would be to turn the upper dual feed fuel line backwards (which I think is what you're asking about) so the fuel comes in from the back of the engine.
For all of those options, from what I know anyway, nobody makes anything "pre-bent" to bolt up, but using a tube bender and/or flaring tool isn't too tough, so why don't you just make up some custom metal fuel line for that section?
