Since this is a used coach, definitely check underneath to see what may have already been done and work from there.
The CHF as Luv2go indicated is a good start (but it may already have been done). Then you could look at adding heavier sway bars. I went with the Road Master SB front and back. The front one is a heavier duty bar than the OEM one it replaces. The rear (at least on my 22k chassis) is added in addition to the OEM SB.
2017 3113 NewMar BayStar, Safe-T-Plus, RoadMaster SB, SuperSteer TB, Koni FSD shocks, CHF Rear, Sumo Springs, Centramatics, EEZ TPMS, King TailGater, LED Headlight kit, EMS-PT50X, Adjustable arm-rests, MagnaShade, 2017 Cherokee TrailHawk Toad...
And Tucker - [SIGPIC][/SIGPIC]