The stock 24:1 is about 5 1/2 turns lock to lock, 16:1 is close to 3 1/2. The aftermarket 20:1 boxes should be about 4 1/2. There’s no markings I’m aware of.
PST has a FABO members discount and sells 24:1, 16:1, and now 20:1 manual steering boxes.
From a handling perspective you want to be able to turn quickly, but that’s not quite as simple as it sounds. A 16:1 box will turn the wheels with less travel on the steering wheel, but it takes more effort, especially at lower speeds. Which means in some cases you may not actually be able to turn the wheel faster because of the higher effort. Like most things, it’s a trade off.
