Just wanted to report back on this. They were the newer guides that failed. So new timing chain, new guides, and some part of the engine that needed rebuilding due to this.
Replaced rear brakes as well as a new radiator. Since I’ve gotten it back, I now have no heat/air flowing in the front cabin (it was working for a few seconds but now nothing - possibly something causing fan to not move?). Also, I have a steering wheel rattle when going over road imperfections at low speeds.
I had very few problems the first 10 years I owned this vehicle, but now it’s needing more repairs than it’s really worth. Unfortunate because I really love it.