Thank you. I was afraid of that... although hopefully this is actually the issue with the drive train noise.
Edit: ASA says they are the same... Unless I'm using it wrong. I don't know why they have two different numbers on them. Looking up that I came upon this:
Driver bracket for vr4------------Mb436505
Driver bracket for awd dsm--------MB346741
Why do I remember being told over and over again that the driver side mount was the same size?