That looks like a much better engineered support arrangement for the weight of the fuel tank.
As a sequel or postscript, I can report that I have tracked down the factory original NOS Pirelli fuel tank filler hose for the Australian/USA delivered Lancia Beta Coupe from Lambda Motors in Australia. They have several more of these NOS filler hoses in stock at a very reasonable price considering their scarcity (and especially compared to what Midwest-Bayless in the USA were charging when they had a NOS filler hose listed).
So if you own an Australian or North American export version of the Lancia Beta Coupe and want or need a replacement factory original fit Pirelli NOS fuel tank filler hose, act fast to secure one! They are in perfect physical condition and genuine NOS.
Here is the Australian ebay link for the Lancia Beta Coupe NOS fuel tank filler hose:
https://www.ebay.com.au/itm/174512410400?ul_noapp=true&autorefresh=trueAlternatively you can contact Lambda Motors directly.
Remember that the Berlina and HPE filler hose is a different shape and different part number so you need a different one for those Beta models.
This is the Berlina/HPE fuel tank filler hose (note the asking price in USD!):
https://www.midwest-bayless.com/LANCIA-BETA-0_p-8112-82332076-oe-fuel-filler-neck-hose-lancia-beta-hpe-sedan-all-oe-nos.aspx