Rear wheel bearings 89 4WD 1 ton full floating axles
 

I'm looking for rear wheel bearings, races and seals for a 89 4WD Sliverado with 1 ton rear full floating axle.

I've owned various Chevs since the 1960's, 1956 4 door sedan, 1981 Malibu, 1986 S-10 SUV, etc.

However this the first time working on a large Chevy Truck so I'm not yet familiar with it's parts.

The Sliverado is a K2500 however it's rear appears to be a one tone full floater same as in the K3500 as it has a hub that's pressed onto the brake drum that holds the wheel rear wheel bearings.

I'm finding various part numbers on Rock Auto for the K3500 such as e.g. 9.5", 10.5" & 11.5" ring gears, inner and out rear bearings, etc.

I'm uncertain what to look for as I don't have a chevy parts manual and also not a hundred percent certain of the rear axle (appears to be 1 ton full floater without an axle tag).