Phil- For some reason I picked up a two volume set of Autolite reference manuals at the Portland Swap meet years ago that will probably help you. These were probably at some parts jobber in the area. They are huge, probably 15 lbs apiece. Do you want to meet up and borrow them? Ross

Where Are You From? Orygun

Do You own a car built by Durant? 1930 6-14

I have a smaller catalog for 1930 Durants that has photos and expanded detail illustrations in addition to the detailed parts listings.
I do not think it has the key to their numbering system, but I would be interested in it if you come up with it.

Where Are You From? Ellensburg, WA and Sahuarita, AZ

Do You own a car built by Durant? Yes, several