I'm feeling teased...
Teased or Tested? LOL
One of those spacial orientation tests!
I know so little about those very late (and very few) engine cases - the last one I worked on (for someone in WY) was a K8 with the turned-sideways serial number, and the final-drive bearing was different from the normal K8. It was gritty with rust (also odd) from sitting a long time, so I replaced it: when I took it out it was a tapered bearing that came out in 2 pieces (core bearing and outer shell) and it has a reinforcement ring around it to hold the bearing cage (I guess?). I think I still have it, will try to get a picture of it. There was a thick flat spacer (like a washer) on the final-drive shaft to hold the inner race in place, but this amounts to a tapered bearing with no preload method. That alone is odd. It was a normal bearing: I took it to the local bearing supplier and he cross-referenced it and said something like, "Oh, that's just a XYKTYPLX bearing with a roller retainer. That'll be a zillion $$$, please".
...OK...the new one fit up fine, so away it went. (?)
Of curiosity at the time, I tried dropping in a normal final-drive shaft setup (I have a couple of late-K versions and some earlier ones, too, in case someone needs one) with driven gear and it dropped right in, just like a normal K8. So,...??