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Some of the upholstered panels that run up front would be tough to fit with true plywood becuase it won't conform to the curvature of the hull as well as a masonite would. Some of the so-mentioned "masonite" might have been finished with a wood layer, and my dashboard cover on the 1966 Skiff was masonite with wood grain "contact paper" which was just a vinyl paper sort of cheap covering. These were not real expensive boats, but they sure had a great form and they are a lot of fun to run today.
Did you ever find a serial number? I still think you could by lightly sanding around the Port nose and aft Starboard rail location mentioned earlier. Easy does it with the sandpaper, however, because once its gone it is gone forever. Virtually any numbers you may find would be of some value in helping with the identification.
Not sure I am following your question about the rail list, are you referring to the bow rail? Actually I find my bow rail looks good but it just gets in the way when trying to get the boat back on the trailer, however, as of lately I have drastically adjusted my retrieval methods due to having fallen into the water late last season, ruined an Iphone, tore out a little fiberglass I have to fix.