I disagree. SFC IMO mainly improve/shortcut the original torturous load path of transmitting forces from the front leaf spring mount, to the rear torque box, to the outer door sill, to the front torque box, to the TB cross member, to the front frame longitudinal.
The original designers were forced to made a number of compromises.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
