Don't see why you would need a steering stabilizer because your doing a BB which is just pucks. I'm guessing you have the stock stabilizer. Wont hurt to replace it as far as i know. I'm replacing mine but thats because mine is leaking so its time to be replaced. If you have vibes you should look into your bushings, U joints, etc. Dont quote me on this though. I'm still a new jeeper and learning myself.