I recently just put a used rear diff in my 2003 ram 1500 5.7 hemi 4x4 and now about 2weeks after I'm getting a clunking noise coming from the rear end. 2brand new ujoints were installed with the rear end swap. What could be causing that?

 

For future reference:
https://dodgeforum.com/forum/dodge-r...s-section.html