I think it's a bit presumptuous to say that it
would be impossible to re-wire a PDP-7, especially since someone or
something (was it done in an automated fashion at the factory?) had to do
it to begin with.
--
I'm in a betting mood...
I will wager $1000 USD that this machine won't be operational (running all
existing diagnostics or at least the CPU/memory/DECtape tests) by this time
next year.
FWIW the wire wrap bit and unwrapper is larger than the std #28/#30 since
the pins on first generation flip chips were rectangular.