So it is now rust free. Although it has numerous holes from the rust.
damage estimated: firewall rusted out quite a bit. cowl - driver side hat channel rusted out. Floor pans - almost gone. Floor pan over transmission has rust. Both rear quarters have rust on over wheel wells and lower rear areas, tail light panel around tail light bezels rusted out, lower parts of the shock towers rusted out and the inner fender panel tops where the panel overlap are rusted out.
I spent a couple days setting up the jig frame using measurements from the Ford manual and cross referencing them to the car. Some measurements from the book were little different, but the measrements were consistent from driver to passenger, front to back so I don't know if that was differences between the 3 production plants.
I talked to Nate at Thoroughbred GT and he said that when installing the floor pans in early mustangs, the measurements were a little different depending on the assembly plant.
So I leveled up the jig moutning locations and checked them with a spirit level and a laser lavel, then mounted the car on the jig.
although the jig is on wheels, I lock the wheels and do not move it until the major frame work is complete and my panels are lining up.
Here are a few photos.
