Liberty Rear Disk Brakes for A-Body
Green Bearings...
I shimmed the disc hat with a spacer and enlarged the hole in the backing plate so it would slide over the bearing.
I havent tried it on factory bearing but I think if you were to press the bearings off then put backing plate on and press the bearing back on it might work.
My conclusion after all this work is that I dont drive fast enough to need anything more than 4 wheel drums...lol
The 4 sp Swinger I am building will get factory drums with smaller bore master.