Need suspension modification advice for new class A

While the chassis aren't exactly the same we put a Roadmaster rear sway bar on our 2001 motorhome on the F53 chassis. It made a big difference in the amount of sway going over uneven pavement and in and out of driveways.

We have a little over 5000 miles on our 2013 motorhome on the F53 chassis and don't see any need for the additioan sway bar. The new motorhome is on a 22,000 lb chassis with 22,5" tires and handles much different than the old one.