This is a great video that tells you everything you need to know about anti roll bars.
it is a bit wordy and wandering but watch it all and it will give you all the info.
what happens to the handle of the car if the rear is stiffer than the front or vice versa
what adjustable length droplinks are used for.
how the thickness of the bar effects the operation how tube anti roll bars stiffness is calculated.
it has it all.