Here is the 27' Chevy frame back from the sandblaster. I think it cost me about $200 to get it blasted.
Here I have the sections of the frame marked out to remove. I later found that I should have taken about 7 more inches out so that the proportions of the car would look correct. You live and learn.
I used a reciprocating saw and a grinder with a cut-off wheel to cut the sections out of the frame. I step cut it so that I would have more surface to weld and the lower cut will support the upper cut.
I made sure to weld cross braces from side to side to make sure the width of the frame stayed the same.
Here the frame is welded back together. What I learned later on is I should have welded gusset plates on the inside of the frame rails over the cut sections. My thinking at the time was that when I boxed the frame that would give it enough support. It ended up being fine but now I always gusset stress areas.