Lot of good info there Funky!
Thanks for sharing. If I end up doing something like that I hopefully can skip some of the heartburn you experienced.
I had seen those nuts with external threads for the caps when I was trying to determine the differences between late model wheels and 1965 wheels in terms of bolt pattern etc. I found some that had the late model 14x1.25 thread and then some "special" ones that had the 7/16 thread. With this being my first car/truck that is older than I am, I guess I am used to seeing the hub centric wheels. In my mind I could just see the lug bolts shearing off in time if they were supporting all the weight...but I know little about these old designs. Learning everyday though.