Newer Trucks with worse suspension for hauling truck camper?

I am happy with my RAM. I did the following upgrades: airbags, anti-sway bar, rancho 9000 shocks, 19.5 rims and tires. The truck is super solid. When climbing in the back or walking in it, there is hardly any movement whatsoever. I likely should have purchased a 3500 DRW, but when I got my truck new, they had a lifetime warranty on the powertrain, only with the Hemi option. At the time, I could not order a SRW in a 3500 with a Hemi. I did not want a DRW.