I have Sumo Maxims installed. I called the Sumo factory and talked with their application engineer. he told me that the only Sumo's they recommend for the F53 chassis are the Maxims (the blue colored ones).
I have no steering stabilizers installed, but have the Steer Safe unit down at the axle. Between the Sumo's, the CHF on all four corners, Koni shocks, and a rear Tiger Track track bar, I have a pretty stable ride. I might install a standard Ford truck steering stabilizer to reduce the jitters in the steering wheel.
I think that the most important changes that I made were the CHF in the front, the rear track bar and the Sumo's. Everything else was just more icing on the cake.
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