UPDATES!!!
Got tired of the loose rattles and boucy ride. Bed came off and I am redoing the bed wood (more on that later). The rear most frame crossmember was really bent as were the lower trailing arms, most likely from previous farm work. I removed the rear most crossmember and replaced it with another one off a truck in the local junkyard.
The I scraped off old grease and wirebrushed and pressure washed the metal. What a mess. A shoe box full of mud, grease etc. came off the frame!
Then I coated the frame with Chassis Saver Brush on paint ($40/quart). Next I'll move on to the bed. In this process I also replaced the worn out hydraulic shock with new Monroe Air shocks and replaced the panhard bars bushings as well. I ordered cab bushings (still waiting on them) as well.