Speedway Motors Small Body 2:1 Steering Quickener, 3/4 Inch 36 Spline, Lightweight Aluminum, Anodized Black Finish, Compact 2.5" x 8" Size, Easy Mount

I use them in street driven cars when adding power steering when the original box requires four turns or more from lock to lock, to make them much more manageable to drive. They are easy to mount and are small enough to fit in any application I've encountered. Most recently a '57 Ranchero that received an electric P/S unit and a quickener coupled to the original steering box. Works great.