If you want a bit more visuals, feel free to check out the first video of the 1972 Shop Truck build on my YouTube channel:
https://youtu.be/uLOoTay3_oA
In the video, I do a walkaround of the truck to show the good and the bad. After the walkaround, I briefly cover what direction I want to go with the build, and then I get right into the teardown and end up pretty much where the picture below shows.
You can get stuck in a YouTube loop and watch all the videos that are out and see the truck get almost fully built right now...or you can follow along a step at a time here in this thread.