Technical How to Identify Ford distributors

I have some rebuilt Ford distributors that I can't identify. I'm familiar with the year and model ( C5DF-12127-C is 65 Falcon Autolite) but can't get the engine figured out. There is a 5BD that goes with it. I'm guessing that's for the engine. Is there a website where I can find this lookup info? I have some old parts books and have been looking on the computer but no luck so far. Thanks.