Yep, that was it...sort of.
The fool who owned it before me half-assed his lift-kit install. Rather than taking the time to line up all of the holes in the springs and run the bolt though, he just cut the bolts down so they wouldn't run through the spings. I removed both sides, aligned everything, ran new bolts in, and reinstalled. It's a lot quieter now
Here's the after photos. Once the passenger side was done, I realized the driver side wasn't as healthy as I previously thought.
Thanks for your help, ReevesDieselYJ.