My driver has the pinky steering when bought, the car had been converted from drum to disc. The steering was not quick, and because of the long, (I do not know how long), steering arms had a very large turing radius.
I firdt found the shortest arms I had, and installed them.
This corrected the turning radius, and obviously made the steering quicker.
I then replaced the pitman with a good used one off a 67 camaro. This pitman arm was longer than the one that was on the car. Now the steering was much quicker.
I then replaced the steering box with a f41 box. Now it became so quick, it was dangerous.
I had also replaced the steering column about the same time. I found I shoved the column down to far, and the rag joint was binding up, which made matters worse.
Once I found the bound up steering, and took care of it, i found the steering is just to fast for the street... approx1.75 turns lock to lock.
I then went back to the origional steering arms and have had them on for prob.55 k miles. I is now approx2.25 turns lock to lock.
I then aligned my car with heavy +caster,
I now have normal new car power steering assist, not the super easy pinky steering, steering also has much better feedback. I would say better than most new cars.
I do feel as I made my steering faster the steering got harder to turn.
You can certainly replace the box, there are different torsion bars, and ratios, in boxes, I replaced with a hodge podg group of used parts and they work, all were stock camaro applications.
Also keep in mind that our cars came out origionally with bias ply tires, and low air pressure in them.