Another "noise" thread

After finally chasing down my clunking noise...I have another fun one. This noise only came about after I put my sway bar back on, installed JBA UCAs and got an alignment. I only really hear it when reversing and have the wheels cranked left..

I first thought it was something loose from getting the alignment but I took it back to have them give it a look over, said it was fine and then it seemed to go away for a bit. Now after cruising around in the snow in 4x4 for a bit, its back with a vengeance.

Here are the videos of the sound.
IMG 1843 - YouTube
IMG 1853 - YouTube

Any ideas?

 

Any takers?

 

Front CV joints?

 

I’m no mechanic. Is there a way to check them besides the noise or do they have to be removed? Boots are intact.