You may want to purchase an Eastwood stud welder dent remover. My 1979 also had 1/2" thick Bondo on the fender tops and the stud welder worked wonders in pulling out the dents. I now have only a normal very thin layer when I had it repainted.
Thanks Warren. My shop tool inventory is growing by the second.
The metal under the Bondo is actually very straight, except for the rust spots of course. The previous owner had done some repairs, but instead of cutting the bad parts out, he simply welded pieces overtop. So then to get the look right he had to bondo over the entire body. There is literally 1/2" thick bondo over some sections with beautiful metal underneath. I will need what appears to be the usual - rocker/sill, shock mount, etc...
Anybody know of a good place for panels in Canada?