What to check on a 46 Mercury

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You have a Canadian Ford/Mercury 114"wheelbase. The dash plastic is correct and in very nice shape. Those pieces are in my judgement the parts that are hard to find in good shape. Post your question on the Early Ford V8 Club web site. Flatheads are their subject and there are still some old timers who can help you. The site has a Mercury forum but you'll get good information from the forum, both Ford and Mercury. Nice car there.