Compatible donor vehicles for steering box upgrade (80/Malibu)

[Shackleford]

I want to replace the factory steering box in my 1980 Malibu with a faster ratio box. When I go to the junkyard, which models should I look for and how can I identify the ratio externally?

I remember correctly from my circle track days, some third gen F-Bodies came with 12:1 boxes that could bolt in to the G-Body platform.

 

[BOXCARS]

https://gbodyforum.com/threads/how-to-upgrade-your-g-body-steering-on-the-cheap.64112/

 

[455'ed80Regal]

Steering gear from 3rd gen f-body w/16" wheels. Has built in stops. Only downside is that you can't turn as sharp as one from a Monte SS, 442, or GN.

 

[grandamman]

Steering gear from 3rd gen f-body w/16" wheels. Has built in stops. Only downside is that you can't turn as sharp as one from a Monte SS, 442, or GN.

......or Grand Am