The image on the left, below, might be the pilot bushing that supposedly allows a 235 Powerglide crankshaft work with a manual transmission forward shaft.

That part number, 690-034, is the same for the same-purpose Dorman bushing?
https://www.dormanproducts.com/p-18310-690-034.aspx

Supposedly, the National bushing PB-656-HD serves the same purpose? (second image from the left).
Attachments
Powerglide-Adapter 235 pilot bushing.jpg (35.49 KB, 173 downloads)
Powerglide-adapter bushing National.jpg (32.29 KB, 170 downloads)

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.