http://www.torklift.com/index.php/pr...ion/stableload

Stumbled on this. Interesting idea.

 

Especially when using a WDH and lifting the rear, the overload springs disengage a bit. These should keep them working and give you more support in the rear. Looks compatible with RAS, airbags and Timbrens.

Seems pretty expensive for what you get though.