Thanks for posting that link to your frame photos.
I have been trying to figure out this forum and it is a learning curve. Every diversion from the thread seems to go to a different thread.
I want to keep my 'Bumper to frame' thread going as I will post updates to show my progress.
I have found lots of good information in these forums that helped me plan for my frame overhaul and axle
Hence I am keeping the original frame configuration and installing a Dexter 2000# axle
with 7" electric brakes
. It will be installed in the original Leading arm configuration. I ordered the axle with 10 degree down angle and from the Dexter tables this should sit almost with the arm level under its rated load.
As to all the other pros and cons discussed with axles, brakes
etc. I decided that it has rolled for 45 years with leading arms so why not!