Ladder bars..??..
What are those gear change issues?..
With a stick, every time you unload and then load the chassis in the gear change, you cause the axle to do what it does, which is drive the drivers side tire into the ground and pick up the passenger side tire. That’s called axle roll rotation.
If it’s an automatic or even a clutchless box that doesn’t unload the chassis like that, you can use an anti-roll bar which is effectively what the ladder bar does. A 4 link allows roll rotation, which you tune out with the shocks.
Obviously, when the power level goes up and you start running in the 7’s or quicker, even the shocks won’t control it and you need an anti-roll bar to help control it.
