steering
I’ve swapped fast ratio/high effort newer steering boxes into three first gen Camaros and also a ’72 El Camino. The Camaros used IROC Camaro boxes and the El Camino took a Jeep Grand Cherokee box. I moved the upper control arm attachment point (Guldstand Mod) on the Camaros and swapped 1978 Trans Am, spindles on the El Camino (cool when I did it 22 years ago but there are better ways to go now).
One of the factors in steering return is caster. I have a more than stock on all of these modified cars. Combined with fresh components and slightly larger sway bars all of these cars have transformed from what you’d expect of an old car into cars that are a pleasure to drive.
I would bet that there is an appropriate late model box for your application. Combined with some simple stuff you can really wake up an A Body pretty cheaply.

