I have researched Kelderman, they have a nice system, but the ACE system is designed to act as an air ride system and use the factory spring's as control arms, where the Kelderman adds another pivot point with its brackets and function as a secondary suspension. Kelderman is said to ride really nice but the ACE in my opinion is a better system, and plan to get the ACE system installed by Southwest International this summer shortly after I move to Texas.....
