Four door 1939 Dodge for sale (not as complete) near Seattle for $3,450):
https://seattle.craigslist.org/skc/cto/d/federal-way-great-classic/7733806347.html
@cjmarzoli
The self shifter came out in 1934, as alluded to here:
https://www.motorcities.org/story-of-the-week/2018/the-1934-reo-automobiles-offered-no-gears-to-shift
There are some transitory literature ads for sale right now that explain further details. Maybe others can point to a more definitive source.
@beemergb FWIW, this posting shows it sold back then:
https://www.jalopyjournal.com/forum/threads/chrysler-straight-eight-324-cu-in.1082653/
posting is for a model C23 with the 323ci 8, which would be distinct from a CD, if that matters to you.
In 1948 the 8 cylinder engine and hydramatic transmission were such a popular combination that some cars that were slated to have the automatic with a six cylinder were changed on the assembly line. There’s a somewhat crude secondary plate under the main one indicating that. The Pontiac club ran an interesting article about it a few years back.
In case you’ve not found it yet, the imperial club has owners manuals, service bulletins, etc. for your car available free for viewing: https://www.web.imperialclub.info/Yr/1939/index.htm