65 barracuda gas fill issue

Everyone I know with early barracuda has the exact same issue. Keep the ideas coming guys.
All early As have the same issue- Barracudas, Valiants, Darts. Even my wagon.
The dinky 1 5/8" filler tube combined with the nearly horizontal angle of it, is the main issue. The early tank will not take a larger diameter filler, and the angle is built in (short of using a top-fill fuel cell in the trunk). All that's left is either additional venting or shielding the splash (fuel restrictor), otherwise you just fill slower. Beats wrecking the paint over time.
The Aussies had a simple trick on their A bodies- a bolt-on spill tray. It didn't get rid of the fuel splash, but it at least kept it off the body.
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