If you take that NAGS # to a local independent auto glass store, you may get better pricing.
As soon as most counter people hear 1967 anything they stop listening and either tell you it's unavailable or it's a special order $10,000 specialty custom build BS.
Truth is there are hundreds of them in warehouses all over the country for about $300 +/- and all it takes is for a part counter person to get off his ***, find and put the NAGS# in his search engine and get it shipped from the warehouse closest to you.