I'm putting an A833 OD in my 56 Dodge pickup. Doing that removes the original trans mounted parking brake. I don't need a ratio change as my 4.10 with the A833 is almost perfect. So a complete rear end swap isn't needed. But I do need a parking brake. My original plan was to add a disk type brake to the Pinion yoke and I have one to use. Not really sure of its holding capacity though. Seems like a lot of leverage would need to be designed into the actuating system. So, it seems like adapting a replacement rear brake system complete from the backing plate out may be better. I'd have to select parts that fit the original drum diameter and the plate would have to place the shoes in the center of the drum. Maybe a trip to a salvage is in order. No hurry, as I'm working on fender rust right now and that will be followed by frame clean/paint and installing my 230 and trans. Anyone attempt this before????