Any good bearing supplier should have bearings/seals or can get them easily.
You can take the time and peek through a parts manual to get the numbers you need and then even your local auto parts store should be able to get them-usually about double the price...
If you do need any gears or pieces I have a few of these trannys in my shed. This is assuming its never been swapped and still has the non-synchro transmission in it?
Jeff