Where can I get carrier bearings for an 08 ford fusion without buying the whole drive shaft?

I just took my car to the shop and found out that the carrier bearing is going out on my car, I need a new one. I was told that the only way to get one is off a salvage car or to buy a new drive shaft because Ford does not sell this part seperate. This has been a huge problem with the Ford Fusions and like it such as the Milan. So my question is, has any of you had this problem and found this part somewhere other than buying a new drive shaft?