Any reproduction rear windshield for 2 door ‘68 New Yorker?

Moving along slowly but surely in my backyard build - reviving a long abandoned ‘68 New Yorker. Tomorrow Apex Auto Glass is sending techs to remove the front and rear windshield/ glass on my 2 door fast top. They are solid and in tact - BUT, in the event that they break… is there a source for new glass? I’m mainly concerned for the rear window! I would appreciate any input.

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