Re: I know Wheezy is ancient but...
Maybe this wiki page can give a guideline for the ISO creation step:
I have access to the build scripts used for this actual ISO when it was first made, so no reverse-engineering is needed.
"A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916