You should be able to do a search of other posts, there are a lot of posts about it and the troubles and solutions, to do the job properly could cost much more than fixing the more reliable mechanical brakes, to have any improvement in braking you could look into the Lincoln servo brakes (not fixed anchor shoes)
Modifications done in place of proper restoration are not always improvements --my model A with mechanical brakes would outstop the 39 sedan, and the 46 I had ---40 years never any problems with the brakes, the 39, 46 have been sold, the hydraulic brakes and the maintenance they needed was a major factor in their sale, I have never had a total brake failure in a mechanical brake car,only hydraulic brake cars.
Many of the 33 brake parts are the same as "A", there are quality reproduction parts to restore the original brakes.