Upload a picture of your transmission pan and the sides of the transmission body. Most common would be a C6 or a FMX I reckon. But it could have been swapped out for something like a C4 sometime in the last 50+ years.
You can use the door tag or marty report to tell you what transmission was originally in your car. That doesn't mean thats whats still there.
I've been assembling Ford code numbers for some time. The attached spreadsheet has Buck Tag Codes, Data (Door) Plate Codes, VIN Codes, DSOs, Basic Part Numbers, and Date Codes. The majority are from official Ford publications. The Buck Tag codes were assembled from a variety of sources. The...
Mine was painted over, too. I got a new one from Marti, as well as a Deluxe Report. The Deluxe Report will tell you what engine, transmission, rear end, paint color, interior, etc that your car came with.
It does appear that it is an FMX. One sure way to identify an FMX is that it will have a cast iron body, with a bolt on aluminum bellhousing and aluminum tailshaft. All others have aluminum bodies.
C4 - 3 pieces, all aluminum bellhousing, main case and tail shaft.
C6 - 2 pieces, all aluminum - main case and tail shaft (CJ and PI use iron tail)
FMX - 3 pieces - aluminum bell and tailhousing, iron maincase.