Reworking an 8 1/4 and can't find ?

Nope. It was a drum rear.
I did the bolt - socket trick to adjust my side load. Only thing to be careful of...USE AN EXTENSION WITH THE LOCKING MECHANISM ON THE END.
Suck to lose the socket in the tube..
Ask me how I know...
The rear housings were nearly identical. Just had to use bearing to fit the Dakota since the OD is the same but the ID is different.
I read lots of things / posts / blogs about having to grind some here or there etc. None of that happened. Went in smooth.
Adjust load, Set pinion depth.. (Special thanks to 69 Mope there. No measuring required, just read the numbers and do some math) Then Torque the pinion.
Done and Done.