Torsion bars for better handling; your experience?

Tx so much...excellent info. I have built a few of these cars and all were a bit different of course.
My last build was a '70 340 Duster with everything stock and new.I remember how pleased i was with the ride and braking ( 73 "Cuda 2 3/4" callipers and 1" master) when everything was brand new even on poor roads.In all fairness you could not push the car. but for regular driving i liked it.The o.e. shocks did not last 2 years and i replaced the fronts before i sold the car.
I pulled my back wheels today to repaint them and decided now is a good time to start experimenting.So because the rear wheels are off anyway i took the rear Bilsteins off and new o.e. shocks went on. Just bouncing the car it is noticeably softer in the rear now.So we'll see if this change softens the ride and how much it affects handling.Those Bilsteins are very stiff!