Glad you have them coming. Some guys have addressed the issue of being on the road with no way of getting replacement bearings. They have chosen to do some sort of 5 lug swap using standard GM tapered rollers from some newer era. Don't know specifics. But Mr. Google will know.
Re: "Old" Numbers, It's the actual bearing that they can't find not the number...and of course, the vendors or their supplier erase the number so you can't go around them. We have all had parts from vendors that were defective or didn't fit. Sometimes you can modify them yourself or, if not, return them. The proof of a good vendor is how easy it is to return. I have also gotten bad parts when fixing things around the house/yard. Such is life in the outsourcing world.
