You would be better of going to the OEM supplyer for parts, Searay won't carry them. I'd give a try comtacting Taylor made products, Norcold, Attwood, Bennett trim tabs, Eutopia, etc. they were all OEM suppliers and may are still in production
your Sea Ray dealer is just going to order the windshield from taylor made products in Gloversville New York, unless you can get the glass from a custom auto glass company.