Note to anyone else out there doing repairs: do not try to graft in a new section of the rocker. The replacement panels do not have the exact same curve, and it will look wonky.
That was my experience anyway. After replacing only the front section of my drivers rocker, I had to buy another outer rocker and replace the whole thing. This was a lot more work as there are about 9000 spot welds to drill out along the floor pan, but it came out much better!
The only thing left to replace on the drivers side now is the rear quarter, which will also probably be the most difficult as it has to look perfect.