I made some good progress over Memorial Day Weekend. The new rear quarter is welded in place now. Visually it probably looks the same as the last pic but there it was just fitted in place. Now it is welded and very solid. I gave it some additional seam welds around the wheel arch and suspension mount points. Now I have to seal the seams and do some body filler work on the remaining rust.
I will look at the new template C and see if it can help me with the Kammback.