Coil Over vs Torsion Bar

This is just a thought but I would imagine with subframe connectors, a bit of reinforcement around the K-frame mounting area, particularly the radiator support, and some "down-bars" going from the firewall to the front frame rails, chassis/"frame" fatigue shouldn't be a huge issue... Anyone have high miles on their coilover A-body riding on rough roads to confirm? lol
Yeah, well, that's the kind of thing I was referring to; but exactly what to do I have no clue, other than to look at the cars set up for rallies and other types of racing, and speak with those who have set them up. If I were ever thinking of doing such a thing I'd do a lot of homework on it first.