Andrew,

I spent a little time, which is rare these days, to look into this and it seems this block used the V8 Bell and low-mount stater, where other 200's used a high mount starter.

Jump to the 200 section here:

https://en.wikipedia.org/wiki/Ford_straight-six_engine

Other than this little page, I can't find a whole lot more on this block. I did find this forum page where, if you patiently sort though some of the banter, you may learn more.

HTML Code:
https://fordsix.com/viewtopic.php?t=68983


Hope this helps. Sorry I'm not (nor apparently is anyone else) better aware of this block.