A couple of years ago I started making a GPS speedometer for the years of the AD trucks that used this same type. It works fine. I later asked if there were people around here that might be interested (to allow me to have some idea when negotiating with the folks in China who made the guts of it) but I never got a good idea. Maybe I need to resurrect the project? There is no way to have an analog odometer however people who have seen mine tell me they like the electronic odometer just as well and the trip portion is re-settable. The new version will be made so it can be dropped into the AD housing and mounted more easily.

https://www.stovebolt.com/ubbthread...ometer-for-the-ad-truck.html#Post1453840

~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end