So with the spring over done in the rear the drive shaft was now a bit too short with very little of the yoke left on the output shaft of the transfer case at full droop. Time for a new rear drive shaft. Due to the time frame of an upcoming trip I ended up going with PST out of the Clearwater on the other side of the state. Didn't take any pics of it installed but I have been very happy with it and their service.
I have had zero driveline vibration issues and put almost 2,000 miles on it in a week. The first day on the trails I did think it might have been a little long though as when the rear articulated a certain way I was getting a harmonic sound that I thought was the yoke bottoming out on the transfer case which would have been pretty bad. After crawling under there to check it out and put a zip tie on the yoke to check how much it moved I noticed a two inch wide area near the middle of the driveshaft that was scratched up. I was very happy to realize that the noise I was hearing was the shaft rubbing on the gas tank skid when the rear articulated a particular way. This was never an issue before but now with the spring over and more articulation I need to do some modifications to the tank skid I guess