S-n-L,
The primary reason for a steering stabilizer is for stabilization of the steering. And that, primarily means "rapid" movement in lateral direction. In other words, if you have a rapid shaking side to side, caused by many issues, it will subdue that. Although the cause of any rapid side to side movement should be taken care of, even if the stabilizer is handling the problem as a band aid.
Diesel pusher rigs, commonly are heavier rigs and, therefor, heavier front end components and are usually more resistant to issues that cause front end steering issues on lighter chassis coaches like the F-53. (Not chastising the F-53 here, just using it as an example). As has been stated, normally no diesel unit needs "enhancement" components. There are a few, very few, exceptions.
I would like to know why your buddy is recommending one for such a nicely built, strong chassis?? Especially without test driving it and analyzing the front end in multiple road/operating conditions such as rough roads, hard braking, braking while turning, uphill, down hill, fully loaded fuel tank etc.
So, I too would recommend not being to antsy to got out and spend "diesel fuel" money on aftermarket parts. Good luck with your new rig.
Scott
Scott and Karla SDFD RETIRED2004 Itasca Horizon, 36GD Slate Blue 330 CAT
2011 GMC Sierra 1500 Ext Cab 4x4 Toad
2008 Caliente Red LVL II GL 1800 Goldwing KI60ND