Being in the midst of swapping later suspension on an old frame I do not understand how anyone concludes a suspension swap is always easier or better than a frame swap when dealing with these old trucks.
Many of the issues, such as adapting steering and brakes are very similar either way. When it comes to building mounts can it really make more sense to build suspension mounts over body mounts?
I know why I chose to stay with the original frame on my project, but my reasons won't be right for everyone else. On at least one of my planned future projects I'm sure the frame swap route is going to be the best choice.
The choice really is more complicated than many make it sound. That's my two cents...
