The first major chunk of rust repair was done on the passenger side. Someone had already started working on the cab and had cut out the inner and outer rockers. Here's how the passenger side currently looks.
Then I started working on the driver side.
It currently looks like this but with the upper floor support.
The next big project on the cab is the rear of the back floor and wall. I was able to find a good donor piece for it.
This required us to flip the cab over and support it by the cowl and the back so the roof wasn't on the ground.
This pic is after we cut up the donor piece and put the replacement back wall skin on.