They not suppose to have square corners, otherwise it won't shift smoothly. There is a parts list on here.
I thought I would post the numbers again with their Peerless numbers, just to make it clearer.
Ref# Part # Cross # Manufacturer
2 530105 SCE-1295 Federal-Mogul
3 780085 BH-108 Torrington (Timken) X2
4 780088 BAM-128 IKO X2
6 530105 SCE-1295 Federal-Mogul
45 788035A 471255 Federal-Mogul
46 780071 TC1018 INA
49 788042 727410 Federal-Mogul X2
50 780084 TC1220 INA
57 780093 S7K Timken
The numbers for the thrust washers are as follows,
Ref# Part # Cross # Manufacturer
37 780072 TRA1018 Timken
51 780051 TRA1220 Timken X2
These numbers work for both the 350 and 400.
If you have a company called KAMAN close by you can get these bearings and seals from them.
http://odref.com/peerless/350-SERIES/ a link to the exploded view.