Shorter in height, lighter in weight, and shorter in length may, repeat may, benefit from a king pin stabilizer. If used correctly you may notice some increased stability, but the only real way to make it really stable is jacks under the frame, or something like JT Strongarm stabilizers.
The JT's are less hassle so that is what I have. I gave my king pin stabilizer away after three unsuccessful attempts at easing the "bounce". It just wasn't worth a hoot with my tall triple axle toyhauler.