stock49,
If what the manual show for tools is anything like the later ones, you don't need all of those to get the job done. A press, caliper and dial indicator whould probably be enough. In the end it's only the mesh between the gears that's important. Pressing on the new bearing to the same spec as the old one (pinion) should be pretty close, and adjusting the ring in/out till it doesn't bind in either direction would give you about a 90% chance of getting it right. Use paint on the ring gear to check wear pattern, and if looks right, then it is right. Otherwise shim pinion bearing so it does mesh right. Everything is in the manual.
jku72,
From looking at the Hollander interchange manual, you will have to replace the gears in your stock rearend as the driveshaft length changed in '41. Gears should be interchangeable from 37-54. Patrick's advertises that their gears are for 37-54 cars.
