Feb 4, 2014 at 12:28 AM
Bridger,
I don't know of anyone who makes 2WD steering stabilizers to fit your application. I would definitely get myself a set of front and rear Hellwig anti-sway bars. This is my best advice. I installed these Hellwigs on my 2005 6.0L PSD Ex, and it helped quite a bit. I tow, but only a Harley on / in a trailer.
The Excursion sits on an F-250 chassis, but Ford installed a softer suspension, that leads to excessive sway, and axle wrap (rear drive tire pushing forward of the rear non-drive tire under quick acceleration).
Look for a set of Radius Rods to prevent rear axle wrap. But for you, I would get myself a set of Hellwigs, front and back, and this should cure about 80% of your sway problems.