Recently installed roller bearings on my 56 3100... Chevy Duty Part # 73-031 ('47-59 inner), $45.95ea; 73-061 (47-57 outer) $29.95ea; 73-111 (47-59 grease seal) 6.95ea
Mfg numbers off the parts: MBS (Japan): Inner bearing race: 909052R; outer race: 909001R
They're working like a charm (knocking on wood...)
