Thanks for the reply. I drove all of the races out and got the original part numbers. I'm having trouble reliably crossing them to replacement part numbers. So I ordered a set from autozone. I'm a little skeptical they will be right as they list the same bearings for a 1/2 tone and 3/4 ton which I don't believe is correct. I will soon find out and reply back.


1949 Chevy 3600
1975 W-25 Hurst Olds
1970 GMC 1/2 ton Fleetside
2010 Chevy Silverado