RAS is the Roadmaster suspension aide. It “may” actually do what you want, although I haven’t used it before. Idk if it will take enough load on initial spring travel to help.
Also over 50% more expensive than bags without the ability to adjust them quickly as air.
Bags are what you want. Get the cheapest set of 5k bags you can find on the Amazonweb and they will serve you well for years. Only set of bags that wore out and popped were from about 03-04. Sold the truck 2 years ago, guy said he lost a bag last summer. So 17 ish years?