Hey LoneRanger. You do have several options and some depend on what you already have. Since your title mentions quick ratio steering, I assume you already have the 4-turn style P/S box found later in the model years. The earlier version Ford used was a 6-turn, but those can be converted to a quicker ratio.
If you just want to rebuild yourself, you could source a rebuild kit at your local parts store, or one of the Early Bronco vendors. I see you are in FL, so Jeff's Bronco Graveyard will be the closest to you:
https://shop.broncograveyard.com/Steering-Box-Power-Factory/products/35/
If you want to have your box professionally rebuilt or converted, you could contact West Texas Offroad as they are well known in the community to provide top notch service.
Hope this helps some.