So I have always thought that my B6001 was the same as a b6100. Well, come to find out after replacing the rear axle seals and trying to find new hubs, by b6001 actually cross references with a B6000. I found this out, because I had ordered the wrong axle seals and hubs. Any thoughts or answers to this one? It seems to be common knowledge around here that the B6001 is supposed to be the same as the B6100, but this seems not to be the case in my situation.