My version of a inner fender support/front subframe stiffener

Interesting concept Denny. Never heard of the "wire car"...link me to some reading if there is any. I agree the cars have been through hell and back...question remains whether we can better them or not. Sure they didnt break, crack or come apart while getting beat on...but were the moving around or flexing?
IMO, the best option is an underhood brace tieing the firewall, core support and fenders together...triangulating them. This is a tough job because of lack of good mounting positions, as well as a bunch of different under hood combinations you'll encounter.