This last picture of the '66 with blue lines was my old car. All original hemi, four-speed, Dana 3:54 sure grip. I restored it over the course of 4 years from '99 to '03. Completely taken to the shell and every nut/bolt/component cleaned/painted/replated. Turned out rather nice, if I do say so myself. When I started, it looked like it had spent some time at the bottom of a lake. It was complete, but would not have been worth doing had it not been a legit car. It was not half as nice as the one you are showing. I guess my point here is; they can all be saved. You just have to decide how badly you want to commit. I think these cars are beautiful and I would certainly encourage you to keep it whole.