I'm reading previous written responses about the use of torsion keys to level the suspension. Most responded by making adjustments to the factory torsion bar. It is my understanding that torsion keys are installed to provided the lift you want without making adjustments to the original TB and upsetting the feel of the ride. It is also my understanding that lifting a truck by using the TB can cause problems to the suspension like unnessary ware on things like the ball joints.
Any comments welcomed.

This all has been discussed but sure lets hash out our suspension geometry again.

Adjusting the torsion bar bolt will re-index the torsion bar raising the truck and limiting down travel of the suspension.

Adding torsion keys re-index the torsion bar without cranking in the adjustment bolt. Raising the truck and limiting the down travel.

Thus both do the exact same thing.

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Chevy trucks have issues with adjusting the keys, it hits the cross member not allowing full adjustment. Thus why lift keys came about. The same company's made them for Ford trucks because well more money. The way the ranger cross member is designed you don't have that issue of limiting adjustment.

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Here is stock key and lift key showing the hole has been index thus allowing the lift. FYI this is a Chevy key

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