I've seen bearing "kits" with 2 cones, 2 tapered roller bearings, and a spacer that appears to be sized the cones diameter.

I also see kits with the same 2 cones, 2 bearings, and a spacer that is wider and the size of the bearings inner race.

I guess dis-assembly will tell me what kit to buy.

Looks to me that these a basically the original "unit bearings", where a housing, bearings, and hub are installed as a unit.

The way I see this - install the bearings, cones, spacer and seal in the (bolt on) housing, press the axle flange hub/rotor into it, and bolt the assembly on, accessing the bolts thru the extra hole in the hub/rotor. I see premium synthetic grease being our best friend here. LOL

I can see that keeping a close eye on brake pads is a must, to avoid pulling this cluster apart for rotor service.

Thanks for the info. Willie