Gasser Handling - Specific Question

My F-53 chassis came with anti-roll bars. They were designed as a matched set, and selected to do a good job,... and they did. The front leaf springs were sagging, prematurely. This caused bottoming out onto the rubber stops. It also resulted in some "bump steer". I installed front Firestone airbags to return the ride height to normal, and I added a front panhard link. I also installed wedge shims designed to increase the caster 2 degrees, and added front ballast in order to assure caster authority. Everything worked very well in improving the directional stability. But, I had occasion to drive a large diesel pusher with a Spartan chassis. The rest is history.