Anti roll bar?

I have heard many really smart people say adding one was one of the best things they have done to their cars. From altered wheel based nose 3’ in the air to a good number of FAST cars. I don’t currently have one in my car, but will, just working on how to package it/hide it and deciding on material. Steel or CF. Steel is easier to package, but heavy. CF is big, but light. Trying to wrap my head around how must twisting force it would see. The use driveshaft diameter CF tubes!