Those pumps are rebuildable and several people do it. They'll also upgrade the materials to be compatible with modern gasoline. Arthur Gould comes to mind- search the forums for his name and you'll get his contact info.
For that reason, I would not pay the inflated price for an NOS unit, or even an older rebuild. Those paper diaphrams would last about 100 miles in modern gas.
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Glenn Williamson
Rocketraider
member AACA and all major Olds clubs
1964 Starfire, 1969 Toronado, 1974 Hurst/Olds, 1976 Ninety Eight
There's a Dodge K-Car and a Ford truck hiding in there too! Hey, ya gotta have something to beat around in...