I used the search function

https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=65175&fpart=1

Using Google came up with a bunch of truck pictures of 3600's with disc brake conversion. http://classiccars.com/81162.car

So, there are ways to get it done. While you are right, that a simple solution is not available, there are solutions.

I have heard of people using a P30 front axle for the front

I know that the rear center section was the same up to 72, so rear brakes should be easy.

The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me