G' Day Jacques,
You are 100% correct. That is the right part, according to my manual.
If you don't mind, I will save a copy of that photo you posted. Clearest photo I have seen so far.
Here's a question you may also be able to answer. Are Ford CMP transmission parts interchangable with civvy stuff of the same year. I need main shaft bearings, gaskets, throw-out bearing and clutch shaft bushes.
I disassembled the gearbox/trans this afternoon. All of the gears, shafts, and roller bearings are really good. The case got treated to a lengthy scrub and degrease. Then went over the whole thing with the twisted wire cup. Even the inspection plate and screws were good enough to use. Despite 70+ years of life, the machined parts still had near razor sharp edges on some of em. Guess how I found out?

Made that discovery a number of times acutally, but did get everything real clean and ready for reassembly.
One thing I have NEVER seen for sale is the grease lubricating hose that goes to the throwout bearing. I may have to get one made, if that is even possible. I have the remains of a couple of em, but they ard strictly pattern material only.
If the gearbox case is good enough, I may get it painted tomorrow. If i'm unsure, i'll mask it off, for blasting through the week.