Bolt in cage?

It's definitely possible to vote one in maybe... I mean as far as pulsing one in you have to have a fish plate underneath and one on top and bolt them as in sandwich them together... but slipping one in there with the requirements of everything being one inch from the roof the doors and other things seems just about impossible..
The only difficult part about taking the interior out is the headliner.. beyond that you're only talkin 3 or 4 hours... Of course that's leaving the dash and steering wheel in and covering them as well as the windows.. the seats and the carpet and door panels would come out so quick it would make your head spin...
It's really the headliner I am worried about.
I used to build totaled cars back in the day, and I have pulled more than my fair share of interiors.
And seen the damage an errant spark that gets past the covered up upholstery can do.
Thats why I wondered if anyone had tried to do the mock up in the car, cut and mark everything then weld it together outside and with maybe just the seats out and windows down slide it in the open door and stand it up inside?
Like a ship in a bottle!!