This is an excellent video showing what is possible if you have the skill and all the workshop tools.
I think such a D16 can be find on internet market places from 50 to 200 US$ in good condition -
The work in this video would cost at least 10 times more. On the other side I don't like this
radical over restoring - I always prefer a much softer resto and like to have some patina left
and signs of use/live.
The soul and charm have also been restored.
Arnold