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Sorry, no help until you post more photos of your truck - just kidding.Welcome to the best forum ever and someone that knows the 1st gen F series better than me will be along soon to help you.
I'd scrape that 25 year road dust off carefully and put it in a bottle because it is genuine vintage road dust. Harder to find than rocking horse turd, and much more desirable.
Welcome, and like Dan said this is the best site on the net, friendly and if you have a question about your truck somebody will be able to answer it, and be happy to do it.