thanks guys for all the information so far. I will get the exact numbers off the cups and cones tomorrow if I can, house is one place shop another. I only knocked one side out and the outer cup was real hard to read. Tried NAPA no luck, and when I tried the bearing supplier the drums were at the brake shop with the cups still in them getting drums turned. I do know the hyatt numbers are what is on the cups and they are not a roller, or ball, but a barrel type bearing. In all my 66 years playing with cars, and a few trucks,and working auto parts for years do not remember seeing any of these before. Grew up working and playing in my dad's wrecking yard in Dubuque Iowa, then living in So. Cal. for several years and this truck is brake and bearing wise like nothing I have ever seen before, but I'm still young. Well guys thanks again got other homework to do.
