I'm wondering why you can't go to a bearing supply house in your area, and get a set of good Timken bearings to just swap on. You'll need the ID, the OD of the race, and the depth of the bearing area in the hub and on the spindle. They should be able to look up the dimensions in their catalogs.
I tried to do this with my '54 Buick several years ago, and would have had it except for one problem: the race for the inner wheel bearing was manufactured with a shoulder on it, that kept the bearing from sitting right down against the knuckle. This moved the hub the proper distance from the backing plate. It's a totally unique bearing that doesn't fit ANYTHING else.
The fix, in my case, would have been to have a spacer machined that was the same width as the shoulder on the OE bearing's race. I never got that far, as the car was a daily driver. However, it could be done.
The first step for you is to find a bearing supply house.
-Brad
