James,

 Seeing that you are out West, I suggest you contact  Henderson's Lineup  and/or their parts online at "Supersteer" and make a possible road trip to them in Oregon. They know there stuff! Remember the Ford F-53 is a truck chassis and while the Koni's will help tune out some road vibration, it will still thump when you hit an expansion joint or bridge seams bad roads will still feel like bad roads!. but it won't porpoise and bounce excessively and you retain better control of your coach!

IMHO

Dan

2017 Fleetwood Bounder 33C; Sumo springs F&R; Supersteer Quad shocks set-up with Koni FSD's F&R ; Supersteer rear Trac Bar.