First I would like to suggest the TL-S sway bar from the Acura dealer ~$60. I just installed it and the car handles remarkably better. For the price of the S/T unit u can get a rear sway and front upper strut from Acura. When test driving my tl-s bar I kept taking corners faster and faster since it handled ALOT better until at one point the rear end came loose. Although gentle it was still a first for me in a honda . I can't imagine how the S/T sway would be safe or even fun to drive since its so much thicker than the 19mm acura. I would think ur back end would be sliding around all ur hard corners. Also the acura one is shaped like stock so u won't have a conflict.