Stock torsion bars are 100% inadequate for modern tires. They were barely adequate for bias ply levels of traction. Even BFG t/a's put too much load on the stock bars.
Exactly!
If you match your shocks to your torsion bars you don't get that problem.
I run 1.12" torsion bars AND a Hellwig 1 1/8" front bar and a 7/8" rear bar. Matched with a set of Hotchkis fox shocks the ride quality is fine. I drive my car as my daily, and my fillings are fine. The key is matching your suspension components to work together.