I'll agree with Gary and Charlie above - find a Ford "FE" engine pump to use on your motor. If I had a good version to recommend - I would - we need to keep such info handy on here. My buddy just got one for his '56 truck (with 272) and then threw the box away before I got to it.
(1) Get the FE type pump from NAPA or some other reputable supplier. More likely to come with junk fuel resistant seals and gaskets.
(2) There are truck models (for a 390?) that even incorporate a "can" style of fuel filter with a replaceable element on the bottom. Makes a very clean installation.
(3) Plumb it with the "right stuff"- bent hard line as much as possible.
(4) Sell the oldies to someone who thinks they can fix'em...........................
Steve Metzger Tucson, Arizona