NAPA auto parts carries an after market rear axle Pinion Bearing .
It replaces , GM # 5.447 - GM # 609864 & GM # 442093 .
The price is out of this world !
PIC
https://s26.postimg.cc/41wxdbuix/NAPA_-_A_1011_Pinion_Bearing.jpgNAPA link
https://www.napaonline.com/en/p/BRGA1011update:
I just went to the NAPA link , they reduced the price to $503.99
update :
Bower / BCA bearing company ( a made in the USA company )
at one time made a after market pinion bearing for your truck
PIC
https://s26.postimg.cc/pal68f00p/8cc52180189e4100b32b72a88f37e947.jpgGeorge
'54 3600