Don't blame you about wanting to avoid rubber hose around the distributor. On mine, I was concerned about the heat into the fuel line also. Same separatot setup as yours now is. I bent up a fuel feed line from the outlet of the separator to the fuel pressure regulator near the carb from 5/16" brake line. Put the bends in it to look semi-factory with an inexpensive tubing bender hand tool. Then ran a 3/8" hose around it full length to provide some insulation for the hard line. Split the hose along its length to get it around the hard line and then placed cable ties at evenly spaced intervals to hold it in place. It's not pretty, but of course aluminum transmits heat better than steel, so I thought it might be necessary.