DEPENDING on how my new dual stabilizer, Borgeson steering gearbox & steering shaft work out... I'm thinking of anti-sway bars myself. Check these out - they're made for our Gen. I trucks.
My understanding is, these work on 2WD and 4WD - they list them AS 4WD, so we wheelers know they work on OUR trucks as well. Wouldn't hurt to drop 'em a line though, JUST to confirm that.
Hope that helps!