Finally able to get a window of time in late this afternoon to provide a "report" from Wrench-O-De-Mayo!
We kicked off the event at 9AM sharp with some folks arriving a tad early for truck delivery and shop prep, while others came in a bit later. Work commenced right away as the plan was for the projects to be finished so the truck owners could take them home at the end of the day.
The weather did cooperate nicely. Bright sunshine all day and a light breeze made the very warm temps tolerable. Mongo's shop having a number of large fans, big garage doors open to allow for air circulation, plus a couple of big coolers full of iced down water and sodas kept everyone hydrated and cool.
The planned "wrenching" for the day included 2 projects. First was the replacement of an old 3 speed OD SM319 with a modern T5 OD 5 speed in a Truck Club members 1959 Apache 1/2 ton. The T5 project also included converting from a 23 to 10 spline input shaft so a special clutch plate wouldn't be needed. The second was to reconstruct and install a truck bed on another Truck Club members '52 3100. I peeked in on the "transmission" project long enough to take some notes and snap a few pictures, but actually put my wrenching skills and elbow grease to work with the "bed" project.
First time for me to actually work on bed reassembly and reinstall, so I learned a number of helpful hints and tips from "Dave" (the Truck Club member heading up the project) that has about a dozen bed assemblies under his belt.
Unfortunately, I had to depart before the projects were finished as Grandpa duty called me away. Below and in the next reply are pics of the project work as it progressed from beginning to when I had to depart.
See the next reply for more fun things that happened during the day besides the two wrenching projects.

Dan
PS - T5 Project pics are attached to this post. Bed Project pics are in the next post.