If it's really that aggressive on your bars, it makes me suspect your shocks are done. It shouldn't be porpoising like that.
Bags might be an option for you, or a Roadmaster Active Suspension setup. Word of caution on the Roadmaster, though. It will raise the back of your truck up about 1-1.5" when it's unloaded with the Roadmaster is set at it's softest.
Bags might be an option for you, or a Roadmaster Active Suspension setup. Word of caution on the Roadmaster, though. It will raise the back of your truck up about 1-1.5" when it's unloaded with the Roadmaster is set at it's softest.