Posting in the 87-96 forum for those dropping their tanks or replacing fuel pumps or fuel filters.
... Dorman in their OE Solutions line makes these as replacements for the 5/16" (800-007) & 3/8" (800-008) fuel lines. The kit containing both sizes is 800-017 is handy when changing fuel pump or dropping the tank as you get both pressure & return line clips / retainers.
They list them for line sizes 10.5mm (fits 5/16" coupler), & 13mm (fits 3/8" coupler). NAPA had the best price at $3/ three pk. The numbers are easily found on part store websites.