Will putting on airbags in the rear or upgrading my f250 6.4 rear leaf set up to f450 leafs increase GVWR? I know it will do nothing for GAWR but e-check in my county goes based off GVWR. So I figured instead of paying $160+/yr to be deeeleted, if I can increase GVWR by adding some suspension upgrades I'd be killing two birds with one stone. Any ideas?