Torque Boxes vs. Frame Connectors

I see each option as addressing different stresses, so I would opt for both torque boxes and frame connectors. That would give you a very stout chassis, able to tolerate both hard cornering and drag launches. Why take a chance when there is so much at stake if you wrinkle a quarter? Once done, if you add a roll bar with eight points, the car could run nines on slicks and take the beating. My 65 was that way for many years, and many wheelstands.