Are you able to tell if it's 2"? I suspect it will be but I can't check the part number until tonight.
If you find a piece, brace yourself, it's brutally expensive and most places want to sell you a length of it, like a couple of feet.
Maybe the repro places like NOS or somebody? When I needed a piece for my Acadian I bought a length and a couple of local guys bought a chunk off me which helped offset the nasty cost of it. I may still have a chunk left but shipping would take a while.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
Just remove the one you have and take it to Cdn Tire or NAPA, etc. (farm supply, heavy truck) and they will have rubber gas hose to fit. Unless you want "matching numbers". I'll warn you it might be red though, so if anyone crawls under there they will see it.
Don
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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC. 1963- Pontiac top selling car in Canada
Mahone Bay, NS Still not old enough to need an automatic
Actually it seems shorter than 6 1/2 inches (maybe shrunk? or shortened over the years?)
That sometimes happens in later years!
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Prince Edward Island
'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.