slant six radiator

Thanks a lot. I need to call Champion, as that number radiator does not show up. The number does, but not with a "B".
PS: Did some research on the hoses.
NAPA 8631 = Gates 21914 for a 1991-2000 Chevy C-1500 PU, 5.7L lower hose
NAPA 8943 = Gates 22310 for a 1996-2001 Ford Explorer 5.0L upper hose.