I'm interested in sway bar upgrade for better handling. Any recommendations for 1999 Lexus GS400 ?
See "Sway Bar Upgrade" here...
The sway bar is what holds the suspension to the wheels and controls how much "roll" your chassis gives when you make a turn, especially a sharp turn. A very popular upgrade is the F-Bar upgrade that is much stiffer than the stock sway bar. There's at least a 50% stiffer setting for this F-Sport sway bar and it really shows. Your ride will be much more responsive with much less under-steer going into a sharp turn. You won't slide in your seat as much. This makes the car feel much sportier, and although it will not increase your horses, it will allow for a higher speed into the turns. For less than an hour's time with install, this is a modification well worth your time and effort.